Describes a reduction in population size so severe that it reduces genetic driversity
Evolutionary tree diagram that summarizes hypothesized relationships among a group of clades
Allele _________ is the abundance of a particular allele among members of a population
Refers to a species that no longer has any living members
Large scale evolutionary patterns and trends
Mating among close relatives
Refers to an allele for which all members of a population are homozygous
Making hypotheses about evolutionary relationships among clades
A group whose members share one or more defining derived traits
A speciation pattern in which a physical barrier arises and ends gene flow between populations
After a small group of individuals found a new population, allele frequencies in the new population differ from those in the original population known as the __________ effect
A mode of natural selection in which a phenotype at one end of a range of variation is favored is called __________ selection
Adaptive ________ occurs as a lineage undergoes a burst of genetic divergences that gives rise to many species
Down
Evolutionary history of a species or group of species
A mode of natural selection in which some individuals out reproduce others of a population because they are better at securing mates
A mode of natural selection in which traits at the extremes of a range of variation are adaptive, and intermediate forms are not is called __________ selection
Genetic _________ is a change in allele frequency due to chance alone
Evolutionary process in which new species arise is called
A speciation in which divergence within a population leads to speciation; occurs in the absence of a physical barrier to gene flow
The joint evolution of two closely interacting species; each species is a selective agent for traits of the other
Key ___________ is a trait that allows its bearer to exploit a habitat more efficiently or in a novel way
Change in allele frequency. Always occurring in natural populations because processes that drive it are always operating
The movement of alleles between populations is called gene ____
A mode of natural selection in which an intermediate form of a trait is favored over extreme forms is called ______ selection
Reproductive ___________ is the end of gene flow between populations
All the alleles of all the genes in a population is called a gene ______
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It prints on two pages.
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