Principle Of Inheritance And Variation Question 409
Question: According to the law of independent assortment, in a dihybrid cross:
Options:
A) There are four genotypes in $ F_2 $
B) $ F_2 $ contains 16 phenotypes.
C) there is a single individual which is homozygous recessive for both the characters.
D) it is not possible to forecast the different phenotypes.
Show Answer
Answer:
Correct Answer: C
Solution:
[a] The law of segregation states that when a pair of contrasting factors or genes or allelomorphs are brought together in a heterozygote (hybrid), the two members of the allelic pair remain together without being contaminated and when gametes are formed from the hybrid, the two separate out from each other and only one enters each gamete as seen in monohybrid and dihybrid cross.
That is why the law of segregation is also described as law of purity of gametes.
BETA
