Free Principles Of Inheritance And Variation (Daily Quiz: 10) NEET Biology Questions & Answers with Detailed Explanation & Full Review

Question-1

Cri-du-chat syndrome in humans is caused by the

(a) fertilization of an XX egg by a normal Y-bearing sperm

(b) trisomy o$F_2$1 st chromosome

(c) loss of half of the short arm of chromosome 5

(d) loss of half of the long arm of chromosome 5.

Question-2

Male XX and female XY sometime occur due to

(a) transfer of segments in X and Y chromosome

(b) deletion

(c) aneuploidy

(d) hormonal imbalance.

Question-3

A colour blind man marries a woman with normal sight who has no history of colourblindness in her family. What is the probability of their grandson being colourblind ?

(a) 1

(b) 0.5

(c) 0.25

(d) Nil

Question-4

In Morgan's experiment, white and yellow genes were linked tightly, while white and miniature wing were loosely linked. The per cent recombination shown by these genes were

(a) 72% and 8.3%, respectively

(b) 50% each

(c) 0.3% and 53%, respectively

(d) 1.3% and 37.2%, respectively

Question-5

In our society women are blamed for producing female children. Choose the correct answer for the sex determination inhumans

(a) Due to some defect like aspermia in man

(b) Due to some defect in the women

(c) Due to the genetic make-up of the particular sperm which fertilizes the egg

(d) Due to the genetic make-up of the egg