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evolution notes pt.1

evolution notes

TermDefinition
Divergent evolution 2 or more related species becoming more and more dissimilair
convergent evolution unrelated species develop similar adaptations bc of similar environments (shark, dolphin)
geographic isolation a physical barrier that divides a population into 2 or more groups (rivers, mountains, etc)
behavioral isolation 2 species that don't mate bc of differences in their behavior
coevolution 2 species that evolve together or have an advantage on each side
reproductive isolation when members of different populations can no longer mate successfully with each other
temporal isolation prevents species from mating bc of their mating time. (winter, summer, fall, spring)
punctuated equalibrum populations that remain stable for long periods of time then get interupted by periods of brief rapid change
adaptation ability of an organism to survive and reproduce in its environment (camouflage)
adaptive radiation the evolution of many species from one common ancestor
gradualism the idea that evolution occured in small steps over millions of years
who is the father of evolution charles darwin
who published the book "on the origin of species" charles darwin
what is the "survival of the fittest" one of darwin theory of natural selection
what is Darwin's evolution theory all living things descend from a common ancestor and species change over time
natural selection organisms with favorable traits survive to pass on there genes faster than organisms with unfavorable traits
what are the 4 main principles of natural selection 1.)variation 2.)overproduction 3.)adaptation 4.)descent with modification
fossil record shows groups of plants and animals placement on how old they are by how deeply buried or not
geographic distribution different animals on different continents that had similar behaviors
developmental similarities developing organisms of different species that looked similar
homologous structures features that are similar in structure but appear in different organisms and have different functions
analogous structures structures that perform a similar function but are not similar in origin
vestigial structures features that are reduced or useless but functional in far distant ancestors
molecular and genetic evidence closely related organisms tat have similar dna and amino acid sequences
Created by: jenny.lopez