Ch. 4 Sex Determination and Sex-Linked Characteristics Flashcards
1
Q
XX =
A
female
2
Q
XY =
A
male
3
Q
turner syndrome
A
XO
4
Q
klinefelter syndrome
A
XXY
5
Q
poly-X females
A
XXX
6
Q
XYY males
A
XYY
7
Q
These regions allow the X and Y chromosomes to pair in meiosis I
A
pseudoautosomal regions
8
Q
Can crossing over occur between X and Y?
A
yes, rare
9
Q
What gene determines if male physical characteristics appear?
A
SRY
10
Q
SRY gene + testes + external female characteristics
A
androgen insensitivity syndrome
11
Q
XX + internal and external male characteristics
A
XX (SRY)
12
Q
What is when you change the characteristic of the male and the female parent in the P generation?
A
reciprocal cross
13
Q
True or False: being XY means you look like a male
A
False
14
Q
True or False: having the SRY gene means you look male
A
False
15
Q
True or False: having the SRY gene and working androgen receptors means you look male
A
True
