Lecture 7: Sex determination Flashcards
1
Q
What is the sex-determining region of the Y-chromosome?
A
The SRY region
2
Q
What are the genes on Y specific to?
A
They are testis-specific.
2
Q
When do sex-specific traits develop in embryos?
What is the name for the stage before sex determination?
A
They only appear at later stages of embryo development.
The stage before development is called the indifferent stage.
3
Q
What happens at the end of the indifferent stage in the presence of testes?
A
4
Q
What happens in the absence of testes at the end of the indifferent stage?
A
5
Q
What does the SRY protein do?
A
6
Q
How can an XX male
A
7
Q
Why is Turner’s syndrome considered a haploinsufficiency?
A
8
Q
What is Turner’s syndrome?
A
9
Q
What is Klinefelter syndrome?
A
10
Q
A
