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