Question

Find out the frequency of AabbCcDdee if parents are AabbCCddEe and AabbccDdee.

• A. $0.78$%
• B. $12.5$%
• C. $25$%
• D. $50$%

Answer 1

The correct option is B $12.5$%

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%.'