Question

In humans what is the genotype resulting in a female?

Answer 1

XX

Explanation:

The 23rd chromosomes in the human genome can be either X or Y

There are two copies of the 23th chromosome.

If a person has XX she is a female.
If a person has XY he is a male
If a person has YY he is dead.

The y chromosome has less information than the X chromosome.
The y chromosome has the information for forming a male.

So YY soes not have enough information to survive.

XX does not have the information to be a male so it is female.