15. Structural abnormalities of Y chromosome

Question 1

Describe the structure of the Y chromosome

Answer 1

Half consists of heterochromatin containing highly repetitive sequence

2 PAR - one tip of p, other at tip of q

Question 2

What are the main genes located on Y, and what is their function?

Answer 2

SRY - testis determining

AZFa/b/c - azoospermia factor regions