Question

Number of Barr bodies in XXXX female is?
A. 1
B. 2
C. 3
D. 4

Answer 1

The quantity of Barr bodies in a cell is not exactly the number of X chromosomes. For instance: In an ordinary female with the genotype 46XX, the quantity of Barr bodies would be 1. In an ordinary male with the genotype 46XY, the quantity of Barr bodies would be 0.

Step by step answer:
Females have two X chromosomes and males have one X chromosome and one Y chromosome. One X chromosome contains basic qualities. The other X chromosome of the female is inactivated during early-stage improvement. Barr body is an idle X chromosome present in a female cell. The quantity of the Barr body is not exactly the number of X-chromosomes.
In the given model, there are absolute 4 X chromosomes.
Subsequently, the quantity of Barr bodies is 4 - 1 = 3.

Hence, the right option is C

Note: Since just a single X chromosome is dynamic in each cell, females with Turner's condition can in uncommon cases cause it to birth even though their cells just contain one X chromosome in any case. They can likewise experience their lives and be utilitarian notwithstanding their cells containing no Barr body and in this manner passing up a couple of qualities that are communicated from the inert X chromosome. Females with this disorder don't create like the normal female, yet they express enough X.