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EastWind [94]
2 years ago
7

Which process drives Darwin's theory of evolution?

Biology
2 answers:
Sladkaya [172]2 years ago
7 0

Answer:

natural selection

Explanation:

Crank2 years ago
3 0
It’s natural selection
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In fruit flies, eye color is a sex-linked trait. Red is dominant to white.
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Answer:

The correct answers are:

1 a. X^RX^r - red eye color female

b. X^RX^R - red eye color female

c. X^RY - red eye color male

d. X^rY - white eye color male

e. X^rX^r - white eye color female

(2nd part can also be answered by above)

Explanation:

It is given that the eye color is a sex-linked character where Red eye color is dominant over white eye color in fruit flies. Sex-linked characters are the character that is a similar inheritance pattern except in the case of the male as there is a Y chromosome that does not carry the gene for the eye color trait so the trait will depend on the allele present on a single  X chromosome in males.

On the basis of this, the sex and color of eyes will be:

a. X^RX^r - red eye color female - Dominant character will mask the recessive white color and two copies of X which means female.

b. X^RX^R - red eye color female - both copies are dominant so red-eye color will be expressed and two copies of the X chromosome that means female

c. X^RY - red eye color male - One X and one Y chromosome that means male and only dominant allele present so red eye color.

d. X^rY - white eye color male - Only allele that is present is recessive with one Y chromosome that means male with white eye color.

e. X^rX^r - white eye color female - two X chromosomes with recessive allele which means white eye color female.

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