Question

Sickle cell disease and cystic fibrosis are relatively commonbecause people who are
___________ have had a survival advantage.

a. homozygous recessive
b. heterozygous
c. homozygous dominant


Matching. Choose the letter of the best match for each item.
Evolution a. Result from convergent evolution
Natural Selection b. Result from recent shared ancestry
Sexual Selection c. Change in allele frequencies of a
Analogous structures population
(wings butterflies and wings of bats) d. Some phenotypes are betterable
Homologous structures to survive and reproduce
(forelimbs of humans, cats, whales, and bats) e. Some phenotypesare better able
reproduce.


Sporophytes produce __________________ which are____________________.

a. eggs and sperm; haploid
b. eggs and sperm; diploid
c. spores; haploid
d. spores; diploid


Gametophytes produce _________________ by the process of________________.

a. eggs and sperm; mitosis
b. eggs and sperm; meiosis
c. spores; mitosis
d. spores; meiosis


Mosses and liverworts (the bryophytes) do

a. produce embryos.
b. have vascular tissue.
c. produce flowers.
d. produce seeds.
e. all of the above.


Ferns, gymnosperms, and angiosperms all

a. produce flowers.
b. produce seeds.
c. produce cones
d. have vascular tissue.
e. have all of the traits listed above.