Given a scientific question, generate a correct answer to it.

[EX Q]: What organ contributes about 60% of the volume of semen ?
[EX A]: seminal vesicles

[EX Q]: The number, size, shape, and banding pattern of chromosomes make them easily identifiable in a what?
[EX A]: karyogram

[EX Q]: How many alleles comes from each parent?
[EX A]:
one