Biology 251 - Genetics » Spring 2021 » Topic 4.1 Quiz
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Question #1
In mammals, the sex chromosome regions that that are homologous for pairing in meiosis are called the:
A.
pseudoautonomous regions.
B.
autonomous regions.
C.
autosomal regions.
D.
pseudoautosomal regions.
E.
parahomologous regions.
Question #2
A gene on the Y chromosome that encodes a transcription factor that determines male sex characteristic development is called:
A.
PAR.
B.
ZRY.
C.
CXY.
D.
SRY.
E.
SYR.
Question #3
Birds and reptiles have the _________ sex chromosomes for biological sex determination.
A.
A and B
B.
X and Y
C.
Z and W
D.
X and W
E.
Y and Z
Question #4
Development of male and female reproductive organs in plants is determined by the mechanism of:
A.
chromosomal sex determination.
B.
genic sex determination.
C.
genic balance.
D.
haplodiploidy.
Question #5
The chromosome composition for sex determination in mammals means that males are the _____ sex.
A.
hemigametic.
B.
homogametic.
C.
heterogametic.
D.
spermatogametic.
Question #6
A fruit fly with two sets of autosomal chromosomes and one X sex chromosome would be ___.
A.
female
B.
intersex
C.
male
D.
metafemale
E.
metamale
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