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Biol 373 Unit 8: Reproduction questions with complete solutions
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Biol 373 Unit 8: Reproduction questions with complete solutions
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Biol 373 Unit 8: ReproductionDefine Autosome - correct answer ✔✔Chromosome that is not an all some (sex chromosome)
Define Sex chromosome - correct answer ✔✔A chromosome involved with determining the sex of an
organism
Define germ cell - correct answer ✔✔Cell containing 1/2 the number of chromosomes as a somatic cell.
Define somatic cell - correct answer ✔✔Any cell of a living organism other than the reproductive cells
Define homologous chromosomes - correct answer ✔✔Two non-identical copies of a chromosome, one
from each parent
Define Sister Chromatids - correct answer ✔✔Two copies are joined in a centre by a centromere
When is chromosomal sex determined? - correct answer ✔✔At fertilization
How are male and female gametogenesis different? - correct answer ✔✔Female gametogenesis starts at
birth with arresting at meiosis whereas male gametogenesis starts at puberty
Luteinizing hormone is responsible for the negative feedback to the - correct answer ✔✔hypothalamus
and anterior pituitary gland
FSH leads to ___ production - correct answer ✔✔gamete
What is the main hormone product of the testes? - correct answer ✔✔Testosterone
What are the main hormone products of the ovaries? - correct answer ✔✔Estradiol and progesterone
, All gonadal steroids share one thing in common besides their production. Ignoring specific condition
settings, what is common amongst gonadal steroids? - correct answer ✔✔All gonadal steroid mediate
negative feedback to hypothalamus and anterior pituitary gland.
A sustained high surge of estradiol will cause a massive ___ of LH/ FSH - correct answer ✔✔increase
Normal spermatogenesis requires temperatures of 2-3 degrees __ than body temperature - correct
answer ✔✔less
What is the term for the failure for testes to descend? - correct answer ✔✔Cryptochidism
Spermatogonia are in the - correct answer ✔✔mitotic phase
Primary spermatocyte are in which phase - correct answer ✔✔meiosis I
Secondary spermatocyte have entered what phase - correct answer ✔✔meiosis II
Spermatids have - correct answer ✔✔completed meiosis but not cell remodelling
What are the primary sex characteristics for males? - correct answer ✔✔Develoment and maintenance
of internal and external genitalia,
support of spermatogenesis
Secondary sex characteristics involve - correct answer ✔✔protein synthesis leading to muscle growth
Testosterone is often onverted in target tissues to - correct answer ✔✔DHT
DHT is required for - correct answer ✔✔- differentiation of external genitalia during development
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