BIO 182 EXAM 2 ASU QUESTIONS AND
CORRECT ANSWERS
The probability that a neutral allele will be fixed by genetic drift equals...? ANSW✅✅the
frequency of the allele
What is critical thermal maximum? ANSW✅✅The max temp specific to the organism when said
organism can still perform functions necessary for survival
What 3 conditions lead to genetic drift? ANSW✅✅-variation
-heritability
-same population
Random processes can...? ANSW✅✅Spread neutral alleles or eliminate beneficial alleles
Gene flow ANSW✅✅dispersal of organisms btw genetically distinct populations
Why disperse? ANSW✅✅-minimize inbreeding
-avoid competition
Influx of beneficial alleles? ANSW✅✅Speeds adaptation
Influx of deleterious alleles? ANSW✅✅Slows adaptation
What factors determine migration load? ANSW✅✅-size of population
-strength of selection
-rates of migration
How can we quantify gene flow? ANSW✅✅Estimate genetic variances
, Species ANSW✅✅group that shares specific properties
biological species ANSW✅✅group of potentially interbreeding species
evolutionary species ANSW✅✅lineage that remains distinct throughout space & time
What prevents species from interbreeding? ANSW✅✅isolation mechanisms
The biological species concept works well for? ANSW✅✅living species that reproduce sexually
What happens when populations come back into contact? ANSW✅✅-populations mix
-selection reinforces isolation
How can sympatric populations evolve reproductive isolation? ANSW✅✅not very easily
what factors would promote sympatric speciation ANSW✅✅physical lineage of alleles
magic alleles
phylogeny ANSW✅✅pattern of lineage produced by speciation
How do we know evolutionary relationships among species? ANSW✅✅We don't. But we can
generate hypotheses
Phenetics ANSW✅✅Grouping is based on phenotypic similarity
Cladistics ANSW✅✅Grouping is based on common ancestry
outgroup ANSW✅✅species closely related to the in-group but less closely related than of those in
the in-group
What do we assume when building super trees? ANSW✅✅Subtrees are correct
CORRECT ANSWERS
The probability that a neutral allele will be fixed by genetic drift equals...? ANSW✅✅the
frequency of the allele
What is critical thermal maximum? ANSW✅✅The max temp specific to the organism when said
organism can still perform functions necessary for survival
What 3 conditions lead to genetic drift? ANSW✅✅-variation
-heritability
-same population
Random processes can...? ANSW✅✅Spread neutral alleles or eliminate beneficial alleles
Gene flow ANSW✅✅dispersal of organisms btw genetically distinct populations
Why disperse? ANSW✅✅-minimize inbreeding
-avoid competition
Influx of beneficial alleles? ANSW✅✅Speeds adaptation
Influx of deleterious alleles? ANSW✅✅Slows adaptation
What factors determine migration load? ANSW✅✅-size of population
-strength of selection
-rates of migration
How can we quantify gene flow? ANSW✅✅Estimate genetic variances
, Species ANSW✅✅group that shares specific properties
biological species ANSW✅✅group of potentially interbreeding species
evolutionary species ANSW✅✅lineage that remains distinct throughout space & time
What prevents species from interbreeding? ANSW✅✅isolation mechanisms
The biological species concept works well for? ANSW✅✅living species that reproduce sexually
What happens when populations come back into contact? ANSW✅✅-populations mix
-selection reinforces isolation
How can sympatric populations evolve reproductive isolation? ANSW✅✅not very easily
what factors would promote sympatric speciation ANSW✅✅physical lineage of alleles
magic alleles
phylogeny ANSW✅✅pattern of lineage produced by speciation
How do we know evolutionary relationships among species? ANSW✅✅We don't. But we can
generate hypotheses
Phenetics ANSW✅✅Grouping is based on phenotypic similarity
Cladistics ANSW✅✅Grouping is based on common ancestry
outgroup ANSW✅✅species closely related to the in-group but less closely related than of those in
the in-group
What do we assume when building super trees? ANSW✅✅Subtrees are correct
