Principles Of Inheritance And Variation Ques 190
190. Blue eye colour is recessive to brown eye colour. A brown eyed man whose mother was blue eyed marries a blue-eyed woman. The children shall be
[1991]
(a) both blue eyed and brown eyed $1: 1$
(b) all brown eyed
(c) all blue eyed
(d) blue eyed and brown eyed $3: 1$
Show Answer
Answer : a
Hints & Solution
(a) The brown eyed man will have the genotype $Bb$ and his wife $bb$. Hence $Bb \times bb=$ $Bb: bb$. Hence ratio is $1: 1$.
BETA
