Lecture 7 Sex Determination

Question 1

What do both males and females share genetically?

Answer 1

Both have at least one X chromosome

Question 2

What does the Y chromosome carry that makes males males?

Answer 2

Contains the testis determining factor

Question 3

The Presence of Y, does what to the gonads?

Answer 3

Gonads develop in the testes and not the ovaries

Question 4

What is the Sex determining region on the Y chromosome known as?

Answer 4

SRY gene

Question 5

What gene is carried on the Y chromosome responsible for sperm production?

Answer 5

Spermato-genesis-mediating genes

Question 6

How many proteins does the Y chromosome encode for?

Answer 6

80 proteins, expressed mainly in the testis

Question 7

What are the names of the two regions where X and Y chromosomes recombine?

Answer 7

PAR1
PAR2

Question 8

What causes the contraction of the Y chromosome?

Answer 8

The accumulation of mutations over time

Question 9

It gets complicated at slide 9

Answer 9

Time to rewatch and figure out what this all is