BIO 182 EXAM 2 (EVOLUTION,
SPECIATION, PHYLOGENTICS)
WITH ACCURATE ANSWERS
GRADED A+ 2026 VERSION!!
Natural selection - answer-process in which some individuals in a population survive
and reproduce while others don't
What two things does natural selection do? - answer-1. removes traits less suited for
living in a current environment
2. Amplifies presence of traits better suited for surivival in the current environment
Conditions for natural selection - answer-1. Variaition in the population
2. Variation in heredity
3. Some individuals reprodice more than others
Adaptions - answer-traits associated with survival and reproduction, on which natural
selection acts
Evolution - answer-change in allele frequency in a population over time
Microevolutuion - answer-evolutuion resulting in changes between different
populations
Macroevolution - answer-evolution resulting in changes between different species
Divergent evolution - answer-two species that evolve start at a common point and
evolve in different directions
, convergant evolution - answer-similar pheontypes evolve independently in distantly
related species
Mechanisms for evolution - answer-1. mutations
2. gentic drift
3. migration
4. natural selection
population - answer-groups of organisims of the same species living in the same area at
the same time
population genetics - answer-causes and consequenes of gentic variation witin a
population
allele - answer-diiferent form of any gene
genetic polymorphism - answer-within a population, a single gene has more than one
allele
allele frequency - answer-rate of occurrence of alleles in a population
Hardy-Weinberg Equilibrium equation - answer-p^2 + 2pq + q^2 = 1
Conditions for Hardy-Weinburg Equilibrium - answer-1. No difference in survivial and
reporoductive success of individuals
2. Sufficiently large population
3. No migration
4. No mutations
5. Individuals mate at random (no sexual selection)
SPECIATION, PHYLOGENTICS)
WITH ACCURATE ANSWERS
GRADED A+ 2026 VERSION!!
Natural selection - answer-process in which some individuals in a population survive
and reproduce while others don't
What two things does natural selection do? - answer-1. removes traits less suited for
living in a current environment
2. Amplifies presence of traits better suited for surivival in the current environment
Conditions for natural selection - answer-1. Variaition in the population
2. Variation in heredity
3. Some individuals reprodice more than others
Adaptions - answer-traits associated with survival and reproduction, on which natural
selection acts
Evolution - answer-change in allele frequency in a population over time
Microevolutuion - answer-evolutuion resulting in changes between different
populations
Macroevolution - answer-evolution resulting in changes between different species
Divergent evolution - answer-two species that evolve start at a common point and
evolve in different directions
, convergant evolution - answer-similar pheontypes evolve independently in distantly
related species
Mechanisms for evolution - answer-1. mutations
2. gentic drift
3. migration
4. natural selection
population - answer-groups of organisims of the same species living in the same area at
the same time
population genetics - answer-causes and consequenes of gentic variation witin a
population
allele - answer-diiferent form of any gene
genetic polymorphism - answer-within a population, a single gene has more than one
allele
allele frequency - answer-rate of occurrence of alleles in a population
Hardy-Weinberg Equilibrium equation - answer-p^2 + 2pq + q^2 = 1
Conditions for Hardy-Weinburg Equilibrium - answer-1. No difference in survivial and
reporoductive success of individuals
2. Sufficiently large population
3. No migration
4. No mutations
5. Individuals mate at random (no sexual selection)
