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Homework answers / question archive / University of South Florida PCB 3063 Quiz 8 1)In a healthy male, 100 primary spermatocytes will form__________________sperm
University of South Florida
PCB 3063
Quiz 8
1)In a healthy male, 100 primary spermatocytes will form__________________sperm. 100
200
300
400
none of the above
2. Which of the following statements about human oogenesis is TRUE?
it starts at puberty
karyokinesis is symmetrical whereas cytokinesis is not
Both A and B
Neither A nor B
3. Spermatogenesis begins at conception.
at birth.
at puberty.
at menopause.
4. In oogenesis, meiosis I is completed at conception
during embryonic development at birth
at puberty
when the egg is fertilized by the sperm
5. Which of the following is a significant difference between spermatogenesis and oogenesis is? oogenesis involves meiosis while spermatogenesis does not
spermatogenesis includes a period of cellular differentiation
oogenesis occurs in the testes
two of the above are significant differences
none of the above is a significant difference
6. In grasshopers, sex is determined by the XX/XY chromosome system.
ZZ/ZW chromosome system.
XX/XO chromosome system.
temperature during embryonic development.
haploid/diploidy system.
7. The Barr body
is another term for polar body.
is an inactivated X chromosome.
is an inactivated Y chromosome.
is an inactivated autosome.
is only found in humans.
8. The most direct precursor to a sperm is the primary spermatocyte.
secondary spermatocyte.
spermatid. spermatogonium.
9. In alligators, sex is determined by the XX/XY chromosome system.
ZZ/ZW chromosome system.
XX/XO chromosome system.
temperature during embryonic development.
haploid/diploidy system.
10. Which of the following best describes the polar body? a synonym for the egg
a precursor cell that matures into the egg
a nonfunctional cell produced at the same time as an egg
the cell produced when the sperm meets the egg
a human that lives in very cold countries
11. In chicken, the female is the homogametic sex.
the heterogametic sex.
XX.
ZZ.
the male.
12. In chicken, sex is determined by the XX/XY chromosome system.
ZZ/ZW chromosome system.
XX/XO chromosome system.
temperature during embryonic development.
haploid/diploidy system.
13. In Drosophila, a fly is triploid and possesses a sex chromosome complement of XXY. This fly is male.
metamale.
intersex.
female.
metafemale.
14. If three Barr bodies are observed in a mammal, the individual must possess
four X chromosomes.
three X chromosomes.
two X chromosomes.
one X chromosomes.
no X chromosomes.
15. A Drosophila melanogaster fly is found to have two copies each of chromosomes 2, 3, 4 and X in addition to two Y chromosomes. This particular fly is a(n)
male metamale
intersex
female
metafemale
16. A Barr body gets formed immediately after fertilization
about two weeks after fertilization
in the second month of pregnancy
shortly after birth
at puberty
17. “Calico” cats are
males that are hemizygous for the X-linked coat color alleles males that are homozygous for the X-linked coat color alleles females that are hemizygous for the X-linked coat color alleles females that are homozygous for the X-linked coat color alleles
females that are heterozygous for the X-linked coat color alleles
18. A calico cat mates with an orange cat. What percentage of their offspring is expected to be calico?
0%
25%
50%
75%
100%
19. Which of the following cells is diploid?
primary oocyte
secondary oocyte primordial germ cell
two of the above
all of the above
20. In honeybees, the male is the homogametic sex. the heterogametic sex.
diploid.
haploid.
the female.
