Question

Find out the frequency of AabbCcDdee if parents are AabbCCddEe and AabbccDdee
a) 0.78 %
b) 12.5 %
c) 25 %
d) 50 %

Principles of Inheritance & Variations​

Answer 1

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Answer 2

Answer:

According to the law of independent inheritance, the alleles are inherited independently. Hence, in the given question, each gene is analysed separately.

1. Aa x Aa = 1/4 AA, 1/2 Aa and 1/4 aa. Hence, 1/2 or 50% offsprings will have Aa.

2. Similarly, bb x bb = all bb. Hence, all offsprings will have bb.

3. cc x CC = all Cc. Hence, all ossprings will have Cc.

4. Dd x dd = 1/2 Dd and 1/2 dd. Hence, 1/2 or 50% offsprings will have Dd.

5. Ee x ee = 1/2 Ee and 1/2 ee. Hence, 1/2 or 50% offsprings will have ee.

Hence, frequency of AabbCcDdee will be 1/2 x 1 x 1 x 1/2 x 1/2 = 1/8, which is equal to 12.5%.

Thus, the correct answer is '12.5%.'

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