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)
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