age 1 of 92
BIOS 242 FINAL EXAM STUDY GUIDE 2025/2026
COMPLETE QUESTIONS WITH CORRECT DETAILED
ANSWERS || 100% GUARANTEED PASS <BRAND
NEW VERSION>
chromosomes .....Answer.......autosome (22 pairs)
sex chromosomes (1 pair)
autosomes .....Answer.......-22 pairs
-each member of a pair carries the same complement of genes
sex chromosomes .....Answer.......-2 forms = X and Y
-not all genes are paired
-X in both male and females --> has essential genes
-Y in only males --> essential genes for developing into male
,age 2 of 92
XX = female
XY = male
mitosis .....Answer.......normal cell division
-DNA replicated once
-cells undergo division once
meiosis .....Answer.......cell division to produce gametes
-DNA replicated once
-cells undergo division twice
reproductive system .....Answer.......all organs involved in mating,
gametogenesis, or other functions involved in producing
offspring
gonads .....Answer.......-males = testes
,age 3 of 92
-females = ovaries
2 major functions:
-produce gametes
-secrete sex hormones
accessory reproductive organs .....Answer.......organs of
reproductive system = transport of gametes
glands = secrete fluids onto reproductive tract
sex hormones .....Answer.......testes = androgens
ovaries = estrogens and progesterone
**both males and females have androgens and estrogens and
progesterone
, age 4 of 92
-adrenal cortex also produces androgens
copulation .....Answer.......act of mating
-sperm deposited into female to fertilize ovum
pregnancy/gestation .....Answer.......-first 2 months = embryo
-after 2 months = fetus
~ 9 months = birth/parturtion
events following fertilization .....Answer.......-chromosomes
determine whether fetus develops ovaries of testes = sex
determination
-sex differentiation controlled by hormones
BIOS 242 FINAL EXAM STUDY GUIDE 2025/2026
COMPLETE QUESTIONS WITH CORRECT DETAILED
ANSWERS || 100% GUARANTEED PASS <BRAND
NEW VERSION>
chromosomes .....Answer.......autosome (22 pairs)
sex chromosomes (1 pair)
autosomes .....Answer.......-22 pairs
-each member of a pair carries the same complement of genes
sex chromosomes .....Answer.......-2 forms = X and Y
-not all genes are paired
-X in both male and females --> has essential genes
-Y in only males --> essential genes for developing into male
,age 2 of 92
XX = female
XY = male
mitosis .....Answer.......normal cell division
-DNA replicated once
-cells undergo division once
meiosis .....Answer.......cell division to produce gametes
-DNA replicated once
-cells undergo division twice
reproductive system .....Answer.......all organs involved in mating,
gametogenesis, or other functions involved in producing
offspring
gonads .....Answer.......-males = testes
,age 3 of 92
-females = ovaries
2 major functions:
-produce gametes
-secrete sex hormones
accessory reproductive organs .....Answer.......organs of
reproductive system = transport of gametes
glands = secrete fluids onto reproductive tract
sex hormones .....Answer.......testes = androgens
ovaries = estrogens and progesterone
**both males and females have androgens and estrogens and
progesterone
, age 4 of 92
-adrenal cortex also produces androgens
copulation .....Answer.......act of mating
-sperm deposited into female to fertilize ovum
pregnancy/gestation .....Answer.......-first 2 months = embryo
-after 2 months = fetus
~ 9 months = birth/parturtion
events following fertilization .....Answer.......-chromosomes
determine whether fetus develops ovaries of testes = sex
determination
-sex differentiation controlled by hormones
