Question

a child suffering from downs syndrome has 47 chromosome?Howmany Barr bodies can be seen in the cell of a female with downs syndrome child
​

Answer 1

Answer:

Ans is 0

Explanation:

In humans with more than one X chromosome, the number of Barr bodies visible at interphase is always one fewer than the total number of X chromosomes. For example, men with Klinefelter syndrome (47,XXY karyotype) have a single Barr body, whereas women with a 47,XXX karyotype have two Barr bodies. A female human with down syndrome, no barr bodies appear.

So, the ans is ‘0’.