Objective: The student will investigate the genetic basis of human males and learn about current information on Y chromosome structure and function.

1	300 million years ago, the Y chromosome was nearly identical to:
	A)	chromosome 18
	B)	chromosome 21
	C)	chromosome 13
	D)	the X chromosome
	E)	none of the above
2	Males possess which combination of sex chromosomes?
	A)	XO
	B)	XY
	C)	XX
	D)	XXX
3	A majority of the genes located on the Y chromosome appear to play a role in:
	A)	hair production
	B)	height
	C)	sperm development
	D)	all of the above
4	The SRY gene:
	A)	is found on the Y chromosome
	B)	if present, turns tissue into ovaries creating a female embryo
	C)	if present, turns tissue into testes creating a male embryo
	D)	a and c
	E)	all of the above