High School

How many of the following people would have cells containing one Barr body?

1. 46,XY
2. 46,XX
3. 47,XYY
4. 47,XXX
5. 45,X
6. 47,XXY

A. Four
B. Five
C. Zero
D. Six
E. Three
F. Two
G. One

Answer :

There are three individuals with Barr bodies: 46,XX, 47,XXX, and 47,XXY. It is found in females and some males with genetic abnormalities. The correct option is E.

A Barr body is an inactivated X chromosome in a cell with multiple X chromosomes. Here's a breakdown of the individuals and their Barr body count:

1. 46,XY (normal male): 0 Barr bodies (1 X chromosome)

2. 46,XX (normal female): 1 Barr body (2 X chromosomes)

3. 47,XYY (male with an extra Y chromosome): 0 Barr bodies (1 X chromosome)

4. 47,XXX (female with an extra X chromosome): 2 Barr bodies (3 X chromosomes)

5. 45,X (Turner syndrome, female with one X chromosome): 0 Barr bodies (1 X chromosome)

6. 47,XXY (Klinefelter syndrome, male with an extra X chromosome): 1 Barr body (2 X chromosomes)

to know more about Barr bodies refer here:

https://brainly.com/question/31090854#

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