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Alex787 [66]
2 years ago
5

Explain why chromosomes are important in inheritance ?

Biology
1 answer:
Allushta [10]2 years ago
7 0

Explanation:

Discuss Sutton’s Chromosomal Theory of Inheritance

Describe genetic linkage

Explain the process of homologous recombination, or crossing over

Describe how chromosome maps are created

Calculate the distances between three genes on a chromosome using a three-point test cross

Long before chromosomes were visualized under a microscope, the father of modern genetics, Gregor Mendel, began studying heredity in 1843. With the improvement of microscopic techniques during the late 1800s, cell biologists could stain and visualize subcellular structures with dyes and observe their actions during cell division and meiosis. With each mitotic division, chromosomes replicated, condensed from an amorphous (no constant shape) nuclear mass into distinct X-shaped bodies (pairs of identical sister chromatids), and migrated to separate cellular poles.

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What statement about the mechanism of hunger and satiety is true?
disa [49]

Answer:

The correct answer is: The ventromedial hypothalamus plays a role in satiety.​

Explanation:

The hypothalamus is a part of the brain that controls many important bodily functions and connects both the nervous system with the endocrine system. The hypothalamus consists of several nuclei that have diverse functions and are located in 3 different regions.

The nucleus that plays a role in satiety is the ventromedial nucleus, terminating hunger and giving a sensation of fullness. It also plays a significant role in thermoregulation, among other things.

Neuropeptide Y, on the other hand, is a peptide that is released to make us feel hungry and encourage us to intake food (primarily carbohydrates).

Cholecystokinin is a hormone released by the small intestines after we had a meal, and its function is to improve digestion and make us feel full.

Fat cells DO release leptin, but the function of this hormone is to produce satiety, by stimulating anorexigenic (meaning they take hunger away) hormones and inhibiting orexigenic ones, like Neuropeptide Y.

7 0
3 years ago
Please answer this asap.
Setler [38]

Answer:

How could energy have played a role in the different rock types forming? Energy causes different types of rock to change in different ways. Energy changes igneous rock into liquid rock and changes sedimentary rock into small pieces of rock. ... No, sedimentary rock can only form out of material from other sedimentary rock.D

Explanation:

5 0
3 years ago
Read 2 more answers
Which of the following maps would a geologist use to study the effects of farming on lakes over time?
Semenov [28]
I would say an "Altitude Tint Map" or a "Mercator Projection Map".
Hope this helped!
5 0
2 years ago
The diagnostic procedure that images the structures of the blood vessels and the flow of blood through these vessels is known as
lubasha [3.4K]

Answer:

Angiography

Explanation:

Doctors often use angiography that images the structure of blood vessels and the flow of blood through these vessels.

  • Angiography uses x-rays to take images of blood vessels and detect the flow of blood through these vessels.
  • Useful in showing blocked or narrowed blood vessel for the diagnosis of any coronary disease.

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Hope this helped!

<h3>~AH1807 </h3>
8 0
1 year ago
Base excision repair (BER) differs from nucleotide excision repair (NER) in which of the following ways?
postnew [5]

The correct answer is:  5) NER recognizes helix distortions, while BER recognizes specific base damage.

DNA damage that occurs as a result of radiation, oxidizing reagents, chemicals and other mutagens can be repaired. Excision repair repairs single strand DNA damage and it includes:

• Nucleotide excision repair (NER)-it detects and repairs types of damage that distort the DNA double helix such as those of UV radiation (thymine dimers); not only the damaged nucleotide(s) are removed but also a surrounding patch of DNA

• Base excision repair (BER)-it detects and removes certain types of damaged bases (small, non-helix-distorting bases); enzyme glycosylase is responsible for this type of repair

7 0
3 years ago
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