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Bio EOCT Domain V

Review of EOCT content for evolution

scientist who believed organisms evolved through acquired traits Lamarck
He wrote Principles of Geology and said plants and animals had arisen, developed vairations and then became extinct Lyell
He wrote An essay on the principles of populations and said species outgrow the food supply, compete for resources, and struggle for survival Malthus
He sailed to the Galapagos Islands on the HMS Beagle and came up with the theory of natural selection Darwin
traits that make organisms better suited to the environment adaptations
changes in a population that occur when organisms with favorable variations for that particular environment survive, reproduce, and pass these variations on to the next generation. natural selection
when species become separated and can no longer interbreed reproductive isolation
use of mathematical descriptions of genetic phenomena to help trace evolutionary trends within populations population genetics
Darwin counted over a dozen different species of finches that he believed evolved from a single founding species. This is an example of ____________ ____________. adaptive radiation
This is where unrelated species may independently evolve superficial similarities because of their adaptations to similar environments. convergent evolution
the variety of organisms, their genetic information, and the communities in which they live. biodiversity
proteins that have changed very slowly and are shared by many species. Used to predict when how long ago organisms share a common ancestor. molecular clocks
the evolution of a new species speciation
when physical barriers cause populations to divide and prevent mating of individuals geographic isolation
evolution that occurs over a long period of time when adaptive changes accumulate slowly and steadily over time in a population gradualism
speciation that occurs quickly in rapid bursts, with long periods of stability punctuated equilibrium
the remains of an organism left in rock, usually the bones and teeth fossils
used to determine the age of fossils by using half-life of elements, usually Carbon 14 radioisotope dating
recognizing distinct fossils in different layers of rock relative dating
a description of the lines of descent (how species are interrelated) for plants and animals phylogeny
the permanent loss of a species extinction
reproductive efficiency of various individuals or genotypes in a population.; depends on the probability that the individual will survive and reproduce successfully fitness
type of selection that favors the average in the population stabilizing
type of selection that favors one variety over all the others directional
type of selection when intermediates disappear and the two extreme varieties are favored disruptive
structures in different species that are similar Example- seal's front flipper, horse's foreleg and human arm homologous structures
structures that no longer have a function in an organism vestigial organs
all of the alleles present in a population for a particular trait gene pool
Created by: elaineconklin