Chapter 4 Terms

Question 1

Y-linked gene that determines maleness in mammals

Answer 1

SRY

Question 2

having both female and male sex organs

Answer 2

intersex

Question 3

processes that equalize the dosage of X-linked gene products in the somatic cells of males and females

Answer 3

dosage compensation

Question 4

describes the inheritance pattern of genes on mammalian X chromosomes

Answer 4

sex-linked

Question 5

describes genes present in only one copy such as that on the X in males

Answer 5

hemizygous

Question 6

the tips of the X and Y chromosomes

Answer 6

pesudoautosomal regions

Question 7

failure of homolog separation in meiosis I or chromatid separation in meiosis II

Answer 7

nondisjunction

Question 8

in XX cells, most genes on a random X chromosome are turned off

Answer 8

X-chromosome inactivation

Question 9

XXY males

Answer 9

Klinefelter syndrome

Question 10

XO females

Answer 10

Turner syndrome

Question 11

cells in the ovary that undergo meiosis

Answer 11

oogonia

Question 12

cells in the ovary that undergo meiosis

Answer 12

oocytes

Question 13

haploid cell at the end of meiosis II that will become a sperm

Answer 13

spermatid

Question 14

cells produced by meiosis that does not become a gamete

Answer 14

polar body

Question 15

cells in the testes that undergo meiosis

Answer 15

spermatocytes