Principles of Inheritance and Variation Question 132
132. Barr body in mammals represents
[1995]
(a) all the heterochromatin in female cells
(b) Y-chromosomes in somatic cells of male
(c) all heterochromatin in male and female cells
(d) one of the two X-chromosomes in somatic cells of females
Show Answer
Answer : d
Hints & Solution
(d) A Barr body is one of the $X$ chromosomes in somatic cells of females. If there are more $X$ chromosomes then there will be more Barr bodies.
