Biology (Mader), 10th Edition

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