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unit 6 crossword

QuestionAnswer
model for rapid speciation that can occur when an event causes a small portion of a population to be cut off from the rest of the population punctuated equilibrium
formation of a new species speciation
5 parallel structures in diverse organisms that have a common ancestor homologous structures
reproduction of individuals with favorable genetic traits that survive environmental change because of those traits, leading to evolutionary change natural selection
speciation that occurs via geographic separation allopatric speciation
speciation when one species radiates out to form several other species adaptive radiation
speciation that occurs in the same geographic space sympatric speciation
group of populations that interbreed and produce fertile offspring species
process by which groups of organisms independently evolve to similar forms convergent evolution
physical structure present in an organism but that has no apparent function and appears to be from a functional structure in a distant ancestor vestigial structure
process by which groups of organisms evolve in diverse directions from a common point divergent evolution
heritable trait or behavior in an organism that aids in its survival and reproduction in its present environment adaptation
selection that favors phenotypes at one end of the spectrum of existing variation directional selection
broader scale evolutionary changes seen over paleontological time macroevolution
changes in a population’s genetic structure microevolution
overarching evolutionary paradigm that took shape by the 1940s and is generally accepted today modern stynthesis
(also, Darwinian fitness) individual’s ability to survive and reproduce evolutionary fitness
event that initiates an allele frequency change in part of the population, which is not typical of the original population founder effect
effect of chance on a population’s gene pool genetic drift
flow of alleles in and out of a population due to the migration of individuals or gametes gene flow
magnification of genetic drift as a result of natural events or catastrophes bottleneck effect
study of how selective forces change the allele frequencies in a population over time population genetics
selection that favors average phenotypes stabilizing selection
selection that favors two or more distinct phenotypes diversifying selection
increase in frequency of beneficial alleles and decrease in deleterious alleles due to selection adaptive evolution
(also, gene frequency) rate at which a specific allele appears within a population allele frequency
mating of closely related individuals inbreeding
all of the alleles carried by all of the individuals in the population gene pool
Created by: mortehay000
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