This is the question for the letter S: Sex Chromosomes!
Which set of chromosomes represents a biological male?
A. XX
B. XY
C. XXX
Scroll down for the answer!
The answer is B: XY
XY represents a biological male
XX is a biological female.
XXX is a biological female with an extra X.
A mother who is XX can only pass along an X to her baby.
A father who is XY can pass along an X or a Y.
So, statistically, there is a 50% chance of having a boy and a 50% chance of having a girl.