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ser-zykov [4K]
3 years ago
12

Drosophila eye color is an X-linked trait. Red eye color is dominant, and white eye color is recessive. Which Punnett square sho

ws the probability that 25 percent of offspring will be red-eyed males?

Biology
1 answer:
Ira Lisetskai [31]3 years ago
6 0

Answer:

Second Punnett on the first attachment.

Explanation:

In a 4 x 4 Punnett there are a total of 4 squares. Twenty five percent (25%) of 4 is 1. This means that only 1 square out of the 4 should have the genotype that you are looking for.

Okay going at it in a biological sense. Because red eyes is dominant, we know that the allele should be represented by a capital R. It is X-linked, so it should be on the X. The problem is looking for the probability of a male offspring so the combination should be XY (this means the offspring is male, XX is for females).

So taking that all together, you're looking for the genotype combination:

X^{R}Y

So you need to find the Punnett that has only 1 square with this combination. The attachment shows which specific Punnett:

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