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horsena [70]
3 years ago
14

Which statement explains the difference in chromosomes in fruit fly (2n=4)?

Biology
1 answer:
Aloiza [94]3 years ago
7 0

Answer:

O Fruit fly gametes have 2 chromosomes while parent cells have 4 chromosomes.

Explanation:

The fruit fly is a diploid (2n) species with a chromosome number equal to 4, which means that somatic cells have two sets of homologous chromosomes, each set composed of two chromosomes (2n = 4). Moreover, fly gametes are haploid (n) cells, containing each a complete set of two non-homologous chromosomes (i.e., half the amount of DNA compared to parent cells). During meiosis, a single cell divides twice following one complete round of DNA replication, producing thus four gametes with a haploid number of chromosomes.

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Suppose the fictional condition lycanthropy is an autosomal dominant disorder that causes an affected person to have a strong ph
hodyreva [135]

Answer:

Sperm undergo more mitotic cellular divisions than egg and therefore have a higher risk of developing a spontaneous mutation.  

Explanation:

As you have seen in the question above, lycanthropy is a mutation that is more likely to be established as the supply of male gametes comes from older men. This is because sperm undergo more mitotic cell divisions than eggs, and therefore are at greater risk of developing a spontaneous mutation.

In order for you to understand this, you need to know that eggs (which are female gametes) are produced at once in a woman's body. Thus, cell division is limited and therefore the opportunity for spontaneous mutations to occur is also limited. However, men produce sperm from adolescence to death, creating the need for countless cell divisions, which can develop genetic errors that create spontaneous mutations in gametes.

3 0
3 years ago
From the choices below, select the activities for which the nervous system is responsible.
Taya2010 [7]
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3 0
3 years ago
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What happens during the second trimester
netineya [11]

The babys organs will start to develop, and the baby will be able to sleep and hear other people outside the womb, the bby starts to grow more essential things it will need to live outside of the mothers womb.


3 0
3 years ago
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What is inside a seed?
Ber [7]

Answer:

inside a seed is a plant called the embryo

Explanation:

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4 0
2 years ago
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How does the feild that surrounds the electromagnet differ from the Earths magnetic field
tino4ka555 [31]

The differences between the geomagnetism and electromagnetism are given below.

<h3><u>Explanation</u>:</h3>

Geomagnetism is defined as the magnetic field that is located all around the earth. Whereas electromagnetism is defined as the magnetic field that is produced due to passing of electricity through a conductor.

The geomagnetism is formed because of the molten elements of iron etc which are present inside Earth's core, and are continuously moving. It mostly resembles the solid block magnet in its field characteristics. But electromagnetism is different. It can be changed according to the current input which isn't possible for Earth’s magnetic field.

4 0
3 years ago
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