Question

Choose the correct answer from the alternatives given.
What proportion of the offsprings obtained from cross AABBCC X AaBbCc will be completely heterozygous for all the genes segregated independently?

• A. 1/8
• B. 1/4
• C. 1/2
• D. 1/16

Answer 1

Answer: (A)

1/8

Since the 1st parents' genotype is AABBCC, gamete formed will be of only 1 type i.e. ABC. Another parent is heterozygous for all genes. There will be 8 gametes formed and only 1 gamete will be abc. so, only 1 out of 8 progeny formed will be heterozygous for all characters.

So, the correct option is '1/8'.