Principle Of Inheritance And Variation Question 437
Question: Barr body in mammals represents [CBSE PMT 1995]
Options:
A) All the heterochromatin in female cells
B) One of the two X chromosomes in somatic cells of females
C) All the heterochromatin in male and female cells
D) The Y chromosome in somatic cells of male
Show Answer
Answer:
Correct Answer: B
Solution:
Barr body is nothing but ?X? chromosome which has become heterochromatic, thus appear as deeply stained body.
Of the two ?X? chromosomes are remains normal while the other appears as a Barr body.
BETA
