Bio 370 Exam 2 questions and
answers rated A+
What does cyclic asexuality suggest? - correct answer ✔✔ That asexuality can be advantageous
during specific times.
The majority of organisms are sexual. (T/F) - correct answer ✔✔ True
Describe asexual lineages in taxonomy distributions. - correct answer ✔✔ They tend to be short
lived, and show up sporadically.
What are the advantages of sexual reproduction? - correct answer ✔✔ Exchange of genetic
material, and recombination.
Outbreeding - correct answer ✔✔ Mating of organisms that are not closely related; this is a
major mechanism of maintaining variation within a species
Inbreeding - correct answer ✔✔ Continued breeding of individuals with similar characteristics.
Cost of meiosis - correct answer ✔✔ 50% chance of elimination regarding co-adapted genes.
Asexual females could be 2x more reproductive if they did not have to use resources on males.
Cost of sexual reproduction for females - correct answer ✔✔ mixing own unmutated genes with
possibly mutated male genes.
, Muller's Ratchet - correct answer ✔✔ Number of deleterious mutations increase every
generation in asexual population. Recombination can also randomly generate least mutated
genotypes.
Oogenesis - correct answer ✔✔ Egg production.
Polar bodies - correct answer ✔✔ the 3 smaller cells produced in oogenesis that will
degenerate. Leads to loss of those alleles.
Anisogamy - correct answer ✔✔ Refers to a difference in gamete size in males and females.
Eggs large and costly, sperm small and cheap.
What limits fitness for males? - correct answer ✔✔ It is limited by access to mates because
males invest less per offspring.
What limits fitness for females? - correct answer ✔✔ Resources, since they invest more in
offspring.
Intra-sexual selection - correct answer ✔✔ Competition within one sex for mates of the
opposite sex.
Female choice - correct answer ✔✔ Intersexual selection.
females actively select desired male.
Environmental unpredictability hypothesis - correct answer ✔✔ Unpredictable environments
will support sexual reproduction because of genetic variation.
apomixis - correct answer ✔✔ any of several kinds of reproduction without fertilization.
answers rated A+
What does cyclic asexuality suggest? - correct answer ✔✔ That asexuality can be advantageous
during specific times.
The majority of organisms are sexual. (T/F) - correct answer ✔✔ True
Describe asexual lineages in taxonomy distributions. - correct answer ✔✔ They tend to be short
lived, and show up sporadically.
What are the advantages of sexual reproduction? - correct answer ✔✔ Exchange of genetic
material, and recombination.
Outbreeding - correct answer ✔✔ Mating of organisms that are not closely related; this is a
major mechanism of maintaining variation within a species
Inbreeding - correct answer ✔✔ Continued breeding of individuals with similar characteristics.
Cost of meiosis - correct answer ✔✔ 50% chance of elimination regarding co-adapted genes.
Asexual females could be 2x more reproductive if they did not have to use resources on males.
Cost of sexual reproduction for females - correct answer ✔✔ mixing own unmutated genes with
possibly mutated male genes.
, Muller's Ratchet - correct answer ✔✔ Number of deleterious mutations increase every
generation in asexual population. Recombination can also randomly generate least mutated
genotypes.
Oogenesis - correct answer ✔✔ Egg production.
Polar bodies - correct answer ✔✔ the 3 smaller cells produced in oogenesis that will
degenerate. Leads to loss of those alleles.
Anisogamy - correct answer ✔✔ Refers to a difference in gamete size in males and females.
Eggs large and costly, sperm small and cheap.
What limits fitness for males? - correct answer ✔✔ It is limited by access to mates because
males invest less per offspring.
What limits fitness for females? - correct answer ✔✔ Resources, since they invest more in
offspring.
Intra-sexual selection - correct answer ✔✔ Competition within one sex for mates of the
opposite sex.
Female choice - correct answer ✔✔ Intersexual selection.
females actively select desired male.
Environmental unpredictability hypothesis - correct answer ✔✔ Unpredictable environments
will support sexual reproduction because of genetic variation.
apomixis - correct answer ✔✔ any of several kinds of reproduction without fertilization.
