AP BIOLOGY

CELL DIVISION

MEIOSIS AND GENETIC VARIATION

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Given the parents AABbCc x AabbCc, assume simple dominance and independent assortment. What proportion of the progeny will be expected to phenotypically resemble the first parent?

A	1/4
B	1/8
C	3/4
D	3/8

Explanation:

Detailed explanation-1: -Expert-Verified Answer. So, all progeny will phenotypically resemble the first parent. So, all progeny will phenotypically resemble the first parent. Only 3 (CC, Cc, Cc) out of 4 progeny will phenotypically resemble the first parent.

Detailed explanation-2: -So, the correct answer is ‘1/8. ‘

Detailed explanation-3: -In this way 8 types of phenotypes will be obtained from this cross-AaBbCc, AabbCc, AaBbcc, Aabbcc, aabbcc, aaBbcc, aabbCc and aaBbCc.

Detailed explanation-4: -So, the correct answer is ‘27’.

Detailed explanation-5: -Count the total number of boxes in your Punnett Square. This gives you the total number of predicted offspring. Divide the (number of occurrences of the phenotype) by (the total number of offspring). Multiply the number from step 4 by 100 to get your percent.

There is 1 question to complete.