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AP Biology Unit 8

Populations

QuestionAnswer
A group of organisms that have the potential to mate and produce viable offspring Species
A groups of individuals of the same species that regularly interact and interbreed, producing viable offspring Population
The collective genome of the individuals within a population Gene pool
Change in allele frequency Microevolution
What causes microevolution? natural selection, sexual selections, artificial selection, or genetic drift
What five conditions have to be present for allele frequency stability? Random mating Large Population No mutations No natural selections No gene flow
What is the Hardy-Weinberg Equation? p2 + 2*p*q + q2 = 1.00
What does p represent? frequency of the dominant allele
What does q represent? frequency of the recessive allele
What does p2 represent? frequency of the homozygous dominant genotype
What does q2 represent? frequency of the homozygous recessive genotype
What does 2*p*q represent? frequency of the heterozygous genotype
Which two conditions apply to adaptive evolution? Natural Selection and selective mating
What three conditions apply to evolution by change? Mutations, gene flow, and small population size
Population is either isolated from the main population or population size suddenly declines Gene drift
An isolated population has a different allele frequency from its source population Founder effect
A sudden decline population size bottleneck effect
isolated population to form new species because gene pools cannot mix due to physical seperation geographical barrier
behavioral or temporal barriers to breeding sympatric speciation
particular courtship rituals aid in mate recognition behavioral isolation
two species that are closely related but mate at different times of the year, day , or under different environmental condition are considered different spcies because their genes will never mix temporal isolation
species evolves into many species to fill available niches in the ecosystem adaptive radiation
sum of behaviors of members of a population niche
Created by: Lilly_Floyd
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