Botany> Find the frequency of AabbCcDdee if paren...

Find the frequency of AabbCcDdee if parents are AabbCCddEe and AabbccDdee. Options are : a) 0.78%b) 12.5%b) 25%c) 50%Please explain me the solution.

Amisha Bharadwaj , 7 Years ago

Grade 12th pass

2 Answers

Arun

Last Activity: 7 Years ago

Dear Amisha

Since the inheritance of each gene is independent, So in order to solve this problem, each gene is analysed separately.

1. Aa x Aa = 1/4 AA; 1/2 Aa and 1/4 aa. This means 1/2 offsprings have Aa.
2. bb x bb = all bb = 1.
3. CC x cc = all Cc = 1
4. Dd x dd= 1/2 Dd, 1/2 dd. This means 1/2 offsprings have Dd.
5. Ee x ee = 1/2 Ee, 1/2 ee. This means 1/2 offsprings have ee.
Phenotypic proportion that look like AabbCcDdee
1/2 x 1 x 1 x 1/2 x 1/2 = 1/8.

Hence in% = 100/8 = 12.5%

Regards

Arun(askIITians forum expert)

ankit singh

Last Activity: 4 Years ago

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%.