Hi! I need help with this question. I’m not 100% sure what it is asking, so if you could at least tell me what it is wanting me to do that would be great :)

Answer:

Dihybrid cross

Explanation:

The true statements concerning chromosomes are:

1. Chromosomes are composed of DNA and packaging proteins called histones so they may fit tightly into the nucleus of a cell.

2. Located on each chromosome are segments of DNA known as genes or units of inheritance that code for functional products.

3. Homologous chromosomes contain the same genes and the same allele combination.

4. DNA replication occurs prior to the cell cycle, in which copies of each homologous chromosomes are made, and each of these copies is called sister chromatids.

5. After replication, sister chromatids, which are identical copies of a chromosome, contain identical allele combinations.

6. The ultimate purpose of sexual reproduction and replicating chromosomes is to pass on a copy of a cell's genes to the next generation of cells within the body.

1. Chromosomes are composed of DNA and histones, which are proteins that help in packaging the DNA. This packaging allows the long DNA molecule to fit tightly into the nucleus of a cell.

2. Genes are located on chromosomes. They are segments of DNA that contain instructions for building functional products like proteins. These genes serve as the units of inheritance, carrying genetic information from one generation to the next.

3. Homologous chromosomes refer to the two copies of each chromosome in a diploid cell. While they contain the same genes, they may have different alleles, or versions of those genes, which contribute to genetic variation.

4. DNA replication occurs before the cell cycle. During replication, each chromosome's DNA is copied, resulting in two identical sister chromatids attached at a central region called the centromere. This ensures that each daughter cell receives a complete set of chromosomes during cell division.

5. Sister chromatids are exact copies of each other because they are formed through DNA replication. They contain identical allele combinations since they originated from the same chromosome.

6. The purpose of sexual reproduction and the replication of chromosomes is to pass on a copy of the cell's genes to the next generation of cells within the body. This ensures the transmission of genetic information, allowing for the development of new individuals with unique combinations of genes.

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Answer:

Yes you are correct.

Explanation:

Number one is the rough ER not the nucleus. Number 3 is the mitochondria not the Ribosomes. This is an animal cell so there can not be a cell wall. There are exactly 3 small vacuoles in an animal cell so yes, you are correct.

Answer:

yes

Explanation:

i hope this helps

Answer:

The answer is B

Explanation:

If you can not find the correct answer then goolge it

The probability that their child will have brown eyes 50%. Thus, option A is the correct option.

According to the given information, the woman is heterozygous for blue eyes. It means that the blue eye color is a dominant trait over brown eyes since heterozygous carrier genotypes are present for dominant alleles only.

The allele for blue eye color is "B" and the one for brown eye color is "b". Therefore, the genotype of heterozygous woman would be "Bb" and the genotype of the homozygous recessive male would be "bb".

Therefore, A cross between Bb x bb gives following phenotype ratio = 50% brown eye : 50% blue eye. There is 50% probability of their child to have blue eye color.

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Answer:

c. medicines are made from forest species

Explanation:

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The lymphatic structures have been placed in the correct category based on their location, and the diagram has been attached below.

Lymph is a clear, colorless fluid that circulates throughout the lymphatic system. It is composed of white blood cells, proteins, and excess interstitial fluid, which is the fluid that surrounds cells and tissues. Lymph is formed when interstitial fluid enters the lymphatic vessels and is then transported through the lymphatic system, where it is filtered by lymph nodes and eventually returned to the bloodstream via the thoracic duct. The lymphatic system plays an important role in immune function, as it helps to remove bacteria, viruses, and other harmful substances from the body, and transports immune cells to areas of infection or injury.

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The statement “the body has the ability to make two vitamins: vitamins d and k” is false because The body has the ability to produce vitamin D, but it does not have the ability to produce vitamin K.

Vitamin D is synthesized in the skin when it is exposed to sunlight. Specifically, a form of cholesterol present in the skin is converted into vitamin \(D_3\) (cholecalciferol) when it is exposed to UVB radiation.

On the other hand, vitamin K is not synthesized by the body and must be obtained through dietary sources. It is primarily found in leafy green vegetables, oils, and some animal products. The two main forms of vitamin K are vitamin K1 (phylloquinone), found in plants, and vitamin \(K_2\) (menaquinone), which is produced by bacteria in the gut and also found in certain animal-based foods, the statement is false.

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The test-crossed offspring of a  heterozygous drosophila fly with alleles for black body, dumpy wings and purple eyes with a homozygous recessive fly will result in a 1:1:1:1 ratio of the four possible genotypes.

The four possible genotypes are BBDdPp, BbdpPp, BbDdpp, and bbDdpp. The first threeb genotype will have black bodies, dumpy wings and purple eyes, while the last genotype will have gray bodies, normal wings, and red eyes.

Since the body color and wing shapes are dominant traits, the offspring would have the following phenotypes in the following numbers: Black bodies, dumpy wings and purple eyes (3): Gray bodies, normal wings and red eyes (1).

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Answer:

Genepool

Explanation:

I hope this helps

Answer:

B. the study of matter and how it changes

Explanation:

Answer:

ADH Anti-diuretic hormone

Explanation:

When blood water potential is low, Osmoreceptors detect change and ADH is stimulated in the hypothalamus which causes an increase in ADH in the bloods water potential. This then increases the distal convoluted tubule and collecting ducts permeability to water resulting in more water being reabsorbed back into the blood resulting in an increase in blood water potential.

When blood water potential is high, Osmoreceptors detect change and stimulation to ADH is reduced in the hypothalamus which causes a decrease in ADH in the bloods water potential. This then decreases the distal convoluted tubule and collecting ducts permeability to water resulting in less water being reabsorbed back into the blood resulting in a decrease in blood water potential.

Answer:

Explanation:

Answer:

left - carbon dioxide

right - glucose

top - light energy

I hope this helps

Reasoning from specific evidence to specific evidence involves drawing conclusions based on a series of specific pieces of evidence or examples. Instead of making broad generalizations, this approach focuses on analyzing individual instances to support a specific argument or claim.

By examining specific evidence, such as data, research findings, or specific examples, one can identify patterns or trends and draw logical inferences. This approach enhances the credibility of the argument as it relies on concrete and verifiable information rather than relying solely on subjective opinions or assumptions.For example, if the claim is that regular exercise improves cardiovascular health, reasoning from specific evidence would involve citing studies that demonstrate the positive impact of exercise on heart health, such as reduced blood pressure, improved cholesterol levels, and enhanced cardiac function. By presenting multiple specific instances of evidence, the argument becomes more compelling and persuasive.Reasoning from specific evidence to specific evidence enables a more rigorous and analytical approach to support a claim, fostering a stronger basis for informed decision-making and effective communication.

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The hormone that maintains the integrity of the uterine wall during pregnancy is progesterone. The hormone that maintains the integrity of the uterine wall during pregnancy is B. Progesterone. This hormone helps to thicken the uterine lining and supports the developing embryo, ensuring a healthy pregnancy.

Uterine wall is essential for pregnancy of a women. The hormone that maintains the integrity of the uterine wall during pregnancy is B. The hormone that maintains the integrity of the uterine wall during pregnancy is progesterone. This hormone helps to thicken the uterine lining and supports the developing embryo, ensuring a healthy pregnancy.

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Deficiencies in folic acid are noticed first in rapidly growing cells, such as those in which areas like bone marrow. correct option is (B).

Here, you have a lower-than-normal number of red blood cells and these cells are abnormally large. These lead to a reduced amount of oxygen circulating in your blood and with time, having less oxygen in your blood can make you feel weak.

As we know blood cells are formed in bone marrow, the deficiency of folic acid is first seen in bone marrow.

This deficiency means not enough vitB9 in body

Folate is required for red blood cells and when body doesn’t have folate, bone marrow produce large red blood cells known as megaloblast. They are large and may not come out of bone marrow which results in less blood cells in bloodstream and hence the decrease in blood cells lead to anemia.

Symptoms of folate deficiency-

1. Tiredness

2. Shortness of breath

3. Pale skin

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Answer: red bricks

Explanation:

Answer:

I hoped this helped

Explanation:

Answer:

carbon

Explanation:

Carbon forms bonds with other atoms which gives flexibility that biomolecules can use to make DNA and RNA causing to make the building blocks of life.

Answer:

i believe it is A: air because carbon comes from air so if they take in the air to maike it they are also taking in carbon

Explanation:

The frequency of a1a2 genotype is a population is 0.4.

Formula to calculate the a1a2 genotype frequency is: -

\(\frac{a1a2 genotype}{total genotype}\) = \(\frac{80}{20 + 80 +100}\) = 0.4

Genotype- The word "genotype" refers to an organism's whole gene pool, or, in other words, the genetic make-up of that creature. The phrase can also be used to describe to the alleles, or different versions of a gene, that an organism carries in a more specific meaning.

Population- A population is described as a collection of people who belong to the same species and cohabit a certain region. In order to survive throughout time, individuals of a population frequently rely on the same resources, are susceptible to the same environmental restrictions, and affect the availability of other members.

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Explanation:

The endergonic (def) light-independent reactions of photosynthesis use the ATP and NADPH synthesized during the exergonic (def) light-dependent reactions to provide the energy for the synthesis of glucose and other organic molecules (def) from inorganic carbon dioxide and water.

Answer: Krebs cycle

Explanation: I took the test and got this answer correct so i hoped this helped!!

Answer:

5 is c

4 is b                                  

Answer: floor

Explanation:

Fossils are structures which provided information about animal adaptations

to climate change.

Fossils refers to remains of living organisms which have been replaced in the form of rock particles due to its presence in the soil for a long period of time.

The fossils contain an understanding of the structures and characteristics

the animals had which is then compared to its present structures. This helps

to explain how the animals adapted to climate change through changes in

the structure, shape of parts of the body.

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Answer:

animal cells and plant cells share the common components of a nucleus,cytoplasm,mitochondria,and a cell membrane.

Answer:

Explanation:

 Plant cells are more rigid due to the cell wall.

Answer: yes

Explanation: