Indicate the expected number of Barr bodies in interphase cells of individuals with Klinefelter syndrome; Turner syndrome; and karyotypes 47,XYY, 47,XXX, and 48,XXXX.

Hey everyone. Let's take a look at this question together. How many bar bodies does a person with carry a? Type X Y. Y have. So another. The number of bar bodies is related to the number of X chromosome. And so the number of are bodies equals the number of total X chromosomes minus one. So to find the number of bar bodies, you take the total number of X chromosomes and subtract one. So looking at the carry A type X Y. Y. We can see we have one X chromosome there. So it would just be one minus one which equals zero. So answer choice A is the correct answer because we know that the number of bar bodies is calculated by taking the total number of X chromosomes and subtracting one from that number. And since we only have one X in that carry a type, we subtract one from one and we get zero, Which is the correct answer. I hope you found this video to be helpful. Thank you and goodbye.