In Barr body (sex-chromatin) of a normal fema | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(D) In the somatic cells of a normal female $(XX)$,one of the two $X$-chromosomes undergoes heterochromatinization and becomes inactive during interph

Vedclass · Accepted Answer

One of the $X$-chromosomes becomes inactive and forms a Barr body near the nuclear membrane

Vedclass · Answer

(D) In the somatic cells of a normal female $(XX)$,one of the two $X$-chromosomes undergoes heterochromatinization and becomes inactive during interphase. This inactive,condensed $X$-chromosome is known as the Barr body (or sex chromatin). It is typically located at the periphery of the nucleus,adjacent to the nuclear membrane. The number of Barr bodies is calculated as $(n - 1)$,where $n$ is the total number of $X$-chromosomes present. Thus,a normal female $(XX)$ has $2 - 1 = 1$ Barr body.

In Barr body (sex-chromatin) of a normal female:

Similar Questions

Sex determination in humans is identified by:

$A$ man who carries a sex-linked gene on his $Y$ chromosome will transmit this gene to:

In humans,sex determination is decided by . . . . . . .

Define / Explain: Sex determination.

Vedclass Test Series

Exam Paper Generator

Online Exam Module