BIOL 206 (QUEENS) UNIT 3 QUESTIONS AND CORRECT
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW
4 costs of sex Ans✓✓✓1. the cost of producing males (twofold cost of
sex)
2. the genetic cost of meiosis (reduced relatedness)
3. the cost of finding mates
4. The cost of mating
Twofold cost of sex Ans✓✓✓It is the cost of producing males. Asexual
females have twice the fitness and asexuality should be selected and
increase in frequency overtime (males don't procreate)
Reduced relatedness Ans✓✓✓Only half the alleles are passed on to
offspring (which halves the relatedness between parents and offspring)
Asexual females have twice the relatedness between parents and
offspring
Cost of finding mates Ans✓✓✓The time and energy spent on searching
for mate could be spent foraging (exacerbated by low population
density)
Cost of mating Ans✓✓✓provides effective means of transmitting
pathogens and infections STD's and exposure to predators.
, The 4 benefits of sex Ans✓✓✓1. Combining beneficial mutations into
one lineage
2. sex generates novel genotypes
3. sex allows for faster evolution (red queen effect)
4. Sex can remove deleterious mutations (Mullers ratchet)
Combining beneficial mutations Ans✓✓✓In asexual species
advantageous mutations must occur in the same lineage. Can be
combined through meiosis and syngamy.
Novel genotypes Ans✓✓✓gametes are created with unique
combinations of alleles
Mullers Ratchet Ans✓✓✓Bad mutations can be purged. Sex usually
produces genotypes with fewer offspring than parents. You can't reverse
bad mutations by being asexual.
Red queen effect Ans✓✓✓Sex allows for fast evolution to outrun
parasites and viruses
Anisogamy Ans✓✓✓The size difference of chromosomes (x and y). The
amplification of asymmetry in parental investment. (not always)
Parthogenesis Ans✓✓✓both mitotic and sexual forms. Organisms
develop from unfertilized eggs
DETAILED ANSWERS (VERIFIED ANSWERS) |ALREADY
GRADED A+||BRAND NEW
4 costs of sex Ans✓✓✓1. the cost of producing males (twofold cost of
sex)
2. the genetic cost of meiosis (reduced relatedness)
3. the cost of finding mates
4. The cost of mating
Twofold cost of sex Ans✓✓✓It is the cost of producing males. Asexual
females have twice the fitness and asexuality should be selected and
increase in frequency overtime (males don't procreate)
Reduced relatedness Ans✓✓✓Only half the alleles are passed on to
offspring (which halves the relatedness between parents and offspring)
Asexual females have twice the relatedness between parents and
offspring
Cost of finding mates Ans✓✓✓The time and energy spent on searching
for mate could be spent foraging (exacerbated by low population
density)
Cost of mating Ans✓✓✓provides effective means of transmitting
pathogens and infections STD's and exposure to predators.
, The 4 benefits of sex Ans✓✓✓1. Combining beneficial mutations into
one lineage
2. sex generates novel genotypes
3. sex allows for faster evolution (red queen effect)
4. Sex can remove deleterious mutations (Mullers ratchet)
Combining beneficial mutations Ans✓✓✓In asexual species
advantageous mutations must occur in the same lineage. Can be
combined through meiosis and syngamy.
Novel genotypes Ans✓✓✓gametes are created with unique
combinations of alleles
Mullers Ratchet Ans✓✓✓Bad mutations can be purged. Sex usually
produces genotypes with fewer offspring than parents. You can't reverse
bad mutations by being asexual.
Red queen effect Ans✓✓✓Sex allows for fast evolution to outrun
parasites and viruses
Anisogamy Ans✓✓✓The size difference of chromosomes (x and y). The
amplification of asymmetry in parental investment. (not always)
Parthogenesis Ans✓✓✓both mitotic and sexual forms. Organisms
develop from unfertilized eggs
