Answers
Two crosses-systems are used by plants, Self-pollination and Cross-pollination. 31- Self-pollination. 32- Cross-pollination. 33- Self-pollination. 34- Cross-pollination. 35- Cross-pollination. Flower image in the attached files.
What are self- and cross-pollination?
Seeds ensure the existence of genetic variation between plants.
There are two general crossing systems in plants, which depend on pollination type.
Self-pollination occurs when the flower pollen is transferred to the same flower stigma, reaching that individual egg to fertilize it. These are autogamous systems. Crossed pollination occurs when the mature pollen is driven by different pollinator agents from one flower to another, reaching the other flower stigma and fertilizing its eggs. These are xenogamous systems.Sexual reproduction gives more possibilities to different alleles of a gene that did not appear in one generation to express in the next generation.
Both types of pollination allow genetic variation, however by the occurrence of crossed pollination there are more chances to ensure the variability of the species and survival to environmental changes. While by self-pollination there are more chances to express the same genotype of the parental plant.
31- Self-pollination
32- Cross-pollination
33- Self-pollination
34- Cross-pollination
35- Cross-pollination
You can learn more about self-pollination and cross-pollination at
https://brainly.com/question/30067255
#SPJ1
Related Questions
BRAINLIEST IF RIGHT 20+ POINTS
Which of the following categories was introduced as an advancement to the original Linnaean Taxonomy?
Archaea
Fungi
Plantae
Protista
Answers
Answer:
Archaea
Explanation:
Answer:
archaea
Explanation:
what are the Seven parts of the water system
Answers
1: Evaporation
2: Condensation
3: Sublimation
4: Precipitation
5: Transpiration
6: Runoff
7: Infiltration
PLSS HELP!! 80 POINTS The crabs that live in the aquatic biome pictured depend on living in
shallow water that has a temperature no greater than 60 degrees F. If climate change
causes an increase of that water’s temperature to 62 degrees F, what will likely happen to the dolphins in that biome, and why?
80 POINTS
Answers
Answer:
The dolphin population may diminish a little.
Explanation:
Crabs are one of the many things dolphins eat, and, as the prompt suggests, they cannot live in temperatures greater than 60 degrees F. If climate change makes the temperature 62 degrees F, the crab population will all die. However, note that dolphins do not only eat crabs, as they have other food sources. However, crabs are a major population, so we can see a disruption in the food web, with there being fewer dolphins than usual.
URGENT DUE SOON!! Kenya and Texas are about the same size, but Kenya has twice as many bird species as Texas. Would you expect a random small area of Texas to have more birds or fewer birds than a random small piece of Kenya? Explain your reasoning.
Answers
Answer: i would expect the random small area of texas to have fewer birds
Explanation:
this is because kenya has twice as many bird species, meaning that in any given area, compared to texas, kenya will most likely always have at least a few more birds.
When does cell division occur once
Answers
13. Soil begins to form when lichens and weather break down volcanic rock into smaller pieces
during
A. pioneer species
B. primary succession
C. secondary succession
D. climax communities
Answers
the fact that cats and predatory birds have forward-facing eyes that enable visual field overlap, like primates, is evidence in favor of which hypothesis about primate origins?
Answers
Answer:
The fact that cats and predatory birds have forward-facing eyes that enable visual field overlap is evidence in favor of the hypothesis that primates evolved from ancestors who were arboreal (tree-dwelling) and insectivorous (eating insects). This hypothesis proposes that the evolution of forward-facing eyes allowed these ancestral primates to accurately judge the distance and position of insects they were hunting or eating while moving through the trees. Over time, this trait was refined and improved, eventually leading to the development of depth perception and improved visual acuity, which are characteristics of modern primates. The presence of forward-facing eyes in other predators, such as cats and birds, suggests that this trait may have evolved independently in multiple lineages as a response to similar selective pressures, which reinforces the idea that the evolution of forward-facing eyes was a key adaptation for life in arboreal environments
Explanation:
Answer:
Explanation:
The fact that cats and predatory birds have forward-facing eyes that enable visual field overlap, like primates, is evidence in favor of the hypothesis that primates evolved their forward-facing eyes as an adaptation to arboreal (tree-dwelling) lifestyles. This adaptation would have allowed early primates to accurately judge distances and move more easily and safely through the branches of trees. The convergent evolution of forward-facing eyes in cats and predatory birds provides support for this hypothesis by suggesting that this visual adaptation is particularly useful for animals that spend a significant amount of time in the trees.
What is the phenotype of a person whith the genotype I^Ai?
Answers
Answer:
Type A
Explanation:
Mode of inheritance for blood is tricky, but type A and B are codominant, while type A and type B are dominant over O. So in this situtation
I^Ai is A because type a is dominant over o
explain how the structural characteristics of the dna molecule contribute to its function in cell division during replication.
Answers
DNA is the molecule responsible for genetic inheritance. In prokaryotes, which are single-celled organisms, DNA replication occurs in the cytoplasm. DNA replication takes place in the nucleus in eukaryotes.
Replication is the process by which the cell's DNA is copied so that it can be split into two identical cells. During replication, the structural characteristics of the DNA molecule contribute to its function in cell division.Structural characteristics of the DNA molecule contributing to replication are as follows:Double helix formation: The DNA molecule is in the form of a double helix, which contributes to its function in replication by allowing each strand to serve as a template for new DNA synthesis. This leads to the production of two identical DNA molecules .Semiconservative replication: During replication, each parent strand splits apart, and each new strand is created to complement each of the two parent strands. Replication occurs in three stages: initiation, elongation, and termination. During initiation, the helicase enzyme unwinds and separates the DNA strands. During elongation, the polymerase enzyme binds nucleotides to the complementary parent strand. During termination, the polymerase enzyme stops binding nucleotides when it reaches the end of the DNA strand.
Learn more about prokaryotes
https://brainly.com/question/29054000
#SPJ11
How do the functions of DNA and RNA differ? *
1 point
DNA directs protein transport, while RNA aids in energy production.
DNA aids in energy production, while RNA directs protein transport.
O
DNA stores genetic information, while RNA relays genetic information for protein
synthesis.
DNA relays genetic information for protein synthesis, while RNA stores genetic
information.
Answers
what is the second mechanism that allows evolution to happen
Answers
The second mechanism that allows evolution to happen is called "genetic drift". Genetic drift refers to the random fluctuations of allele frequencies in a population that occur due to chance events such as mutations, genetic recombination, and sampling error.
In small populations, genetic drift can have a significant impact on the gene pool and can lead to the loss of alleles or fixation of new alleles over time. This mechanism is particularly important in isolated or small populations, and can result in genetic divergence between populations. In contrast to natural selection, which operates on traits that confer a selective advantage, genetic drift is a non-selective process that can lead to evolutionary change without any adaptation to the environment.
To learn more about, genetic drift, click here https://brainly.com/question/29764189
#SPJ11
_____ statements regarding p53 is not true?
Answers
The statement regarding p53 that is not true is: "p53 promotes cell survival and growth regardless of cellular stress or DNA damage."
In fact, p53 is a tumor suppressor protein that plays a crucial role in preventing cancer by stopping cell growth and inducing apoptosis (cell death) in response to cellular stress or DNA damage.
Apoptosis, also known as programmed cell death, is a natural process of cell self-destruction that plays a crucial role in various physiological and pathological events in multicellular organisms. It is a tightly regulated and highly organized process that helps maintain tissue homeostasis, eliminate damaged or unwanted cells, and shape development.
Apoptosis involves a series of cellular events orchestrated by specific signaling pathways. These pathways can be activated by various internal and external stimuli, such as DNA damage, cellular stress, developmental cues, or immune responses. The activation of apoptotic pathways leads to the activation of specific enzymes called caspases, which are responsible for executing the cellular demolition process.
During apoptosis, cells undergo characteristic morphological changes, including cell shrinkage, membrane blebbing, chromatin condensation, and fragmentation of the cell into membrane-bound apoptotic bodies. Importantly, these changes prevent the release of harmful cellular contents and stimulate phagocytic cells to engulf and remove the apoptotic bodies, preventing inflammation and tissue damage.
Apoptosis serves several important functions in different contexts. During development, it plays a critical role in sculpting and shaping tissues and organs by eliminating excessive or unnecessary cells. In the immune system, apoptosis helps regulate the number of immune cells, eliminating autoreactive or infected cells. It is also involved in eliminating damaged or potentially cancerous cells, acting as a protective mechanism against tumor formation.
Apoptosis is a fundamental biological process that maintains tissue homeostasis, shapes development, and eliminates unwanted or damaged cells. Its highly regulated nature ensures that cells undergo self-destruction without causing harm to the surrounding tissues. Understanding the mechanisms and regulation of apoptosis is crucial for various fields, including developmental biology, immunology, and cancer research.
To know more about apoptosis visit:
https://brainly.com/question/30837708
#SPJ11
which enzyme catalyzes the elongation of a dna strand
Answers
Elongation. During elongation, an enzyme called DNA polymerase adds DNA nucleotides to the 3′ end of the newly synthesized polynucleotide strand.
What criteria does 1,3-cyclobutadiene follow for aromaticity? what criteria does 1,3-cyclobutadiene not follow for aromaticity?.
Answers
1,3-cyclobutadiene does not fulfill the criteria for aromaticity as it lacks planarity, effective conjugation, and the required number of π-electrons. It is considered non-aromatic or antiaromatic, which typically exhibits higher reactivity and instability compared to aromatic compounds.
1,3-cyclobutadiene does not follow the criteria for aromaticity, known as Hückel's rule, which states that for a molecule to be aromatic, it must fulfill the following criteria:
1. Planarity: The molecule must have a planar, cyclic structure to allow for the delocalization of π-electrons.
2. Conjugation: The molecule must possess a continuous loop of overlapping p-orbitals, allowing for the delocalization of π-electrons.
3. Aromatic number of π-electrons: The molecule must have a number of π-electrons that follows the formula 4n + 2, where n is an integer (known as the Hückel's rule). This condition ensures maximum stability due to complete delocalization of π-electrons.
Now, let's analyze 1,3-cyclobutadiene based on these criteria:
1. Planarity: 1,3-cyclobutadiene is non-planar due to the inherent strain caused by the angle strain in the four-membered ring. The bond angles in the ring deviate significantly from the ideal 120° required for planarity.
2. Conjugation: While 1,3-cyclobutadiene has a cyclic structure, the p-orbitals necessary for conjugation are not effectively aligned due to the non-planarity of the molecule. This prevents the delocalization of π-electrons.
3. Aromatic number of π-electrons: According to Hückel's rule, a molecule with a four-membered ring would require 4π-electrons (n = 1) to be aromatic. However, 1,3-cyclobutadiene has four π-electrons, which does not satisfy the 4n + 2 requirement.
To know more about conjugation
https://brainly.com/question/30762832
#SPJ11
58:25
Jasmine and Marcus are at the park, and Jasmine makes the following statements. Which of them is an inference?
The leaves are green.
The flowers are breathtaking.
The plant is producing oxygen.
The bush has thorns.
Next
Save and Exit
Submit
Mark this and retum
Answers
Answer:
The flowers are breathtaking.
Explanation:
The leaves are green is an observation. The plant producing oxygen is a scientific fact. The bush having thorns is also an observation.
On the other hand, the flowers being breathtaking is simply a matter of opinion. So, it is an inference.
Hope this helps!
Convection currents transfer thermal energy ____.
a. as a result of buoyancy
b. from warmer regions to cooler regions
c. between continents
d. from cooler regions to warmer regions
Answers
DNA is the genetic material that makes up living things, and folic acid plays an important role in the formation of DNA. Jon wants to study the effect of folic acid on DNA formation in microbes. Which statement accurately describe the variables in this study? A. The amount of folic acid and DNA synthesized are both dependent variables. B. The amount of folic acid and DNA synthesized are both independent variables. C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable. D. The amount of folic acid is the dependent variable, and the DNA synthesized is the independent variable. E. The amount of folic acid and DNA synthesized are neither dependent nor independent variables.
Answers
Answer:
The correct answer is - C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Explanation:
DNA is the genetic material of most of the living organisms. In this question, Joe wants to study to see the effect of folic acid on the synthesis of the DNA. Folic acid ae the essential nutrients or vitamin for the synthesis of nitrogen bases of the DNA that are purines and pyrimidines. A dependent variable and an independent variable are two important part of any experiment.
A dependent variable is a variable being tested and measured. In the experiment Jon is conducting, the amount of DNA becomes a dependent variable that is being tested and measured in the presence of folic acid. And folic acid is the independent variable tested to check the formation of DNA in bacteria.
Thus, the correct answer is - C. The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Answer:
The amount of folic acid is the independent variable, and the DNA synthesized is the dependent variable.
Explanation:
Edmentum
The image shows the structure of a phospholipid, which is a major component of cell membranes.
How is the structure of the phospholipid related to its function?
A The hydrophobic head attracts water, and the hydrophilic fatty acid tail repels water.
B The hydrophobic head repels water, and the hydrophilic fatty acid tail attracts water.
C The hydrophilic head attracts water, and the hydrophobic fatty acid tail repels water.
D The hydrophilic head repels water, and the hydrophobic fatty acid tail attracts water.
Answers
C ). The hydrophilic head attracts water, and the hydrophobic fatty acid tail repels water. The structure of the phospholipid is related to its function as a major component of cell membranes.
Phospholipids have a polar hydrophilic head composed of a phosphate group and a glycerol molecule, and nonpolar hydrophobic tails composed of fatty acid chains. This structure creates a bilayer in which the hydrophilic heads face outward towards the aqueous environment, while the hydrophobic tails face inward away from the water.
This arrangement provides a barrier that separates the cell's internal environment from the external environment. The hydrophobic tails prevent water-soluble molecules from passing through the membrane, while the hydrophilic heads allow the passage of water and small polar molecules. The fluidity of the phospholipid bilayer is also important for cell membrane function, as it allows for the movement of molecules across the membrane. Therefore, the specific arrangement of the hydrophilic and hydrophobic components of the phospholipid is essential to the function of the cell membrane.
To know more about cell membranes visit:-
https://brainly.com/question/13524386
#SPJ11
Calculate the acceleration between D and E.
Answers
Answer:
I believe the answer is D.5m/s/s
The study of environmental science:
Describe the key features of Inland Grey Box Grassy
Woodland.
Answers
The Inland Grey Box Grassy Woodland is characterized by the dominance of Eucalyptus microcarpa (Grey Box) trees, diverse grasses, and an open canopy structure. It supports high biodiversity, adapts to arid conditions, and provides valuable ecosystem services.
Here are the key features of this selected vegetation type:
1. Dominant tree species: The dominant tree species in the Inland Grey Box Grassy Woodland is Eucalyptus microcarpa, commonly known as the Grey Box. This species is a medium-sized to large tree that can reach heights of up to 20-30 meters. It has rough, fibrous bark that is greyish in color, hence the name "Grey Box."
2. Understory vegetation: The understory of this woodland typically consists of a diverse range of grasses, herbs, and shrubs. Some common grass species include Themeda triandra (Kangaroo Grass) and Poa labillardieri (Common Tussock Grass). These grasses are well-adapted to the local climate and soil conditions.
3. Canopy structure: The Inland Grey Box Grassy Woodland usually has an open canopy structure, with the Grey Box trees scattered throughout the landscape. This open structure allows for a moderate amount of sunlight to reach the ground, supporting the growth of diverse grasses and understory vegetation.
4. Biodiversity value: This vegetation community is known for its high biodiversity value. It provides habitat for a variety of wildlife, including birds, reptiles, mammals, and insects. The diverse plant species within this woodland support different ecological functions and provide food and shelter for various animals.
5. Adaptations to arid conditions: The Grey Box and other plant species in this woodland have adaptations that allow them to thrive in arid or semi-arid environments. For example, Grey Box trees have deep root systems that enable them to access water from lower soil layers. The grasses and herbs often have drought-resistant traits, such as deep roots or the ability to go dormant during dry periods.
To know more about Inland Grey Box Grassy Woodland refer here :
https://brainly.com/question/33352557#
#SPJ11
Which mRNA sequence complements the DNA sequence below?
The right half of a D N A molecule
Four m R N A molecules
A. Sequence A
B. Sequence B
C. Sequence C
D. Sequence D
Answers
Answer:
sequence c
Explanation:
i just took the biology learning gizmo five questions
Transcription is the process of mRNA synthesis. It occurs in the nucleus before translation. During transcription, RNA bases pair DNA bases, replacing Thymine with Uracyl. You will find the example in the explanation.
Note: The DNA sequence is missing, so I will provide a new sequence and explain the procedure. I suggest you perform the same steps with your molecule fragment and reach the correct mRNA.
Protein synthesisProteins synthesis is done in two stages: transcription and translation. The whole process begins in the nucleus and finishes in the cytoplasm.Protein synthesis initiates in the AUG start codon -Metionin-, and ends when reaching either of the stop codons UAA, UAG, UGA. Once the new molecule is completed, it is sent to its final destiny.Transcription:The first step before protein arrangement is to synthesize messenger RNA, mRNA. This is the transcription process and occurs in the nucleus. When the DNI molecule separates into two strands to form the transcription bubble, we can identify two separate segments: coding strand and template strand. The coding strand goes in direction 5' to 3', while the complementary strand -template strand- grows in direction 3' to 5'. This last segment is the one that is going to be complemented by the mRNA. It is the template strand. A template DNI strand is read in direction 3'→ 5' to build the mRNA molecule that grows in direction 5'→ 3'.During transcription bases forms pairs. RNA replaces Thymine with Uracyl, so pairs are as follows,DNA mRNA
Adenine pairs Uracyl, Thymine pairs Adenine, Guanine pair Cytosine, Cytosine pair Guanine.Translation:
Translation occurs in the cytoplasm. During translation, rRNA reads mRNA in 5' to 3' direction, and tRNA adds the correct amino acid to the growing chain. The first extreme to be translated carries the amino-terminal group, while the other extreme carries the carboxy-terminus group.ExampleWe will consider for this example the following DNA template strand.
DNI strand ⇒ 5'-TAGAACGCCTCGAAATTTCATACT-3'
Transcription
template DNI strand ⇒ 5'-TAGAACGCCTCGAAATTTCATACT-3'
mRNA ⇒ 3´-AUCUUGCGGAGCUUUAAAGUAUGA- 5´
The new mRNA strand is
mRNA ⇒ 3´-AUCUUGCGGAGCUUUAAAGUAUGA- 5´
Once the mRNA synthesis is over, the molecule leaves the nucleus and proceeds with translation in the cytoplasm.
You can learn more about transcription at
https://brainly.com/question/2141652
https://brainly.com/question/5001340
https://brainly.com/question/8953083
what is the process of heating food to a temperature that kills harmful bacteria
Answers
Answer:
Pasteurization
Explanation:
Pasteurization involves heating liquids at high temperatures for short amounts of time. Pasteurization kills harmful microbes in milk without affecting the taste or nutritional value (sterilization= all bacteria are destroyed).
it is called pasteurization
Methods farmers use to increase crop production from their land
Answers
Explanation:
Consider these 9 tips, techniques, and methods regarding how to increase your corn crop yield
Plant Early, Plant Effectively. ...
Practice Seasonal Soil Rotation. ...
Know The Yield Potential. ...
Always Scout Your Fields. ...
Ensure Proper Water Drainage. ...
Utilize Fertilizers. ...
Test Your Soil. ...
Weed Early and Often.
In the secondary structure of proteins, what type of bond dictates how the protein folds?.
Answers
The type of bond that dictates how the protein folds in the secondary structure of proteins is known as the hydrogen bond.
A hydrogen bond is a special type of intermolecular bond between a partially electronegative atom and a hydrogen atom attached to another electronegative atom. A hydrogen bond is a special type of dipole-dipole attraction that occurs between molecules that have a hydrogen atom bonded to nitrogen, fluorine, or oxygen. Hydrogen bonds are also responsible for the formation of the secondary structure of proteins.
These are composed of alpha helices and beta sheets. The protein chain is folded into a coil-like structure called an alpha helix in alpha helices. A beta sheet is a flat, sheet-like structure that folds in the shape of a zigzag and is made up of beta strands. In both cases, the hydrogen bonds between the protein chain's amino acid residues dictate the structure's overall shape.
Finally, hydrogen bonding is an important interaction in the tertiary structure of a protein. Hydrogen bonds between the R-groups of amino acids assist in the maintenance of the three-dimensional structure of a protein. These interactions are crucial in determining the protein's physical and chemical properties and can influence the protein's biological activity, folding, and stability.
Know more about hydrogen bond here,
https://brainly.com/question/21054466
#SPJ11
Uses energy from sunlight to make food in the form of sugar
Answers
Answer:
Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose.
Explanation:
If I’m wrong, sorry. If I’m right, mark me brainlest!
Answer:
Photosynthesis uses energy from sunlight to make food in the form of sugar. Hope this helps! :)
In secondary succession, which happens first?
A. Soil is built
B. Grasses and other annual plants establish themselves.
C. Small shrubs establish themselves.
D. Wind brings lichens and mosses.
Answers
The first thing which happens in secondary succession is: (B) Grasses and other annual plants establish themselves.
Secondary succession is the establishment of life in a region where organisms existed earlier but vanished due to some natural disturbances like fire. The region in such case consists of some nutrients and soil and hence these need to be recycled to grow back life. Grasses and small plants can grow in such regions because they can grow in little nutrients conditions.
Annual plants are those which can complete their life cycle in an year. From germination to seed production, every process takes place within a year and such plants die off.
Therefore, the correct answer is option B.
To know more about annual plants, here
brainly.com/question/10581315
#SPJ4
Explain latitude and altitude and tell how temperature, latitude, and altitude affect which plants grow in an area.
1;Latitude affects where one is on the globe relevant to the equator and poles. The closer to the equator, the warmer it is. Altitude is a measure of how high something is off the surface. The higher in altitude, the colder it gets. Certain plants are adapted to certain temperature ranges.
2;Altitude affects where one is on the globe relevant to the equator and poles. The closer to the equator, the warmer it is. Latitude is a measure of how high something is off the surface. The higher in latitude, the colder it gets. Certain plants are adapted to certain temperature ranges.
3;Altitude affects where one is on the globe relevant to the equator and poles. The closer to the equator, the colder it is. Latitude is a measure of how high something is off the surface. The higher in altitude, the warmer it gets. Certain plants are adapted to certain temperature ranges.
4;Latitude affects where one is on the globe relevant to the equator and poles. The closer to the equator, the colder it is. Altitude is a measure of how high something is off the surface. The higher in altitude, the warmer it gets. Certain plants are adapted to certain temperature ranges.
Answers
The complete explanation of the latitude and altitude with respect to the plants that grow in an area is as follows:
Latitude affects where one is on the globe relevant to the equator and poles. The closer to the equator, the warmer it is. Altitude is a measure of how high something is off the surface. The higher in altitude, the colder it gets. Certain plants are adapted to certain temperature ranges.Thus, the correct option for this question is A.
What do you mean by Latitude and altitude?Latitude and altitudes are the two fundamental factors that are considerably known to impact the temperature and its variations on the surface of the earth. This is because the variations in the latitude and altitude construct unequal heating of the earth's atmosphere.
According to the question, the region closer to the equator of the earth is considerably warmer as compared to the poles. Altitudes govern the measurement of the degree of height with respect to the surface of the earth. The higher in altitude, the colder it gets.
Therefore, the correct option for this question is A.
To learn more about Latitude, refer to the link:
https://brainly.com/question/28173702
#SPJ1
Organisms that have the best "Fitness" for their environment are said to have the best
Select one:
o a variations
b. homologies
c. adaptations
d. vestiges
Answers
Answer:
c. adaptations
Explanation:
an adaptation is any heritable trait that helps an organism, such as a plant or animal, survive and reproduce in its environment.
Which of the following are viruses unable to infect?
Answers
Answer:
non living things
Hope this helps :) !!!
How did green algae come about
Answers
Answer:
Green algae grow at the edges of a glacial lake in Wales. Hundreds of millions of years ago, similar algae adapted to survive temporarily outside of the water may have kicked off the evolution of green land plants.
Algae didn't always hang out in the seas, but one fateful day, about a billion years ago, a simple bacterial cell swallowed a cyanobacteria cell, writes Ed Yong at The Atlantic. This chance occurrence allowed the bacteria to produce energy from the sun, a process known as photosynthesis.
Explanation: