Sex determination Flashcards
1
Q
What are the 23rd chromosomes
A
They are the sex crhomosomes. They can be X or Y.
2
Q
What sex cells do females have
A
Females have X chromosomes. A female will have 2 X chromosomes. (XX)
3
Q
What sex cells do males have
A
Males have Y chromosomes. A male will have on X and Y chromosome (XY)
4
Q
What effect does the small size of the Y chromosome have
A
Means it cannot carry any alleles.
5
Q
What does the Y chromosome do
A
The Y chromosomes cause the embryo to develop testes
6
Q
Who is sex determination determined by
A
Sex determination is determined by the male as they both consist of X and Y chromosomes, giving it a 50% chance for the baby to be a boy or girl
