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Evolution

QuestionAnswer
Genetic Drift Death causing the loss of an allele (traits) within a population by CHANCE. (Forest fire/freak accident)
Gene Flow New alleles (genetic material) being introduced into a population by organisms MOVING IN from another population.
Recombination Genetic information being mixed up every time a gamete is formed = all gametes are different. (you give your babies different combos of your DNA)
Mutation Spontaneous change in the DNA sequence that give rise to new traits. Only passed on if occurs in the gametes of an organism.
Gene pool All genetic information (alleles) possessed by a population.
Allelic Frequency How often an allele is seen within a population.
DNA Sequence Blueprint for life - translated to amino acid sequences --> traits
Natural Selection Survival of the most fit for an environment. The best adaptations are passed to the next generation.
Adaptation A trait caused by a mutation that ends up being beneficial and increasing and organism's chance of survival. Passed to next generation.
Diversity Level of differences (variety) within a population.
Speciation The development of a new species that has become so genetically different from it's original population that it no longer interbreeds.
Interbreed To create fertile offspring. Reproduce within a group.
Competition Struggle between organisms over finite resources.
Habitat Environment in which an organism lives.
Offspring Babies / next generation
Inherited variation Differences passed down from parents to offspring.
Reproductive advantage Organisms whose adaptations make them more likely to mate and reproduce.
Fossil record Chart of found fossil locations and sedimental rock they were found in. In most cases older fossils are at the bottom and younger on top.
Equilibrium Balance
Biogeography The study of the locations of the habitats of different species on a map.
Homologies Similarities between species / things in common
Anatomical homologies Similarities in the structural make up of different species (bones etc.)
Molecular Homologies Similarities in the DNA of different species. The more similar the DNA, the more closely related the organisms.
Developmental Homologies Similarities in the embryos of different species of organisms
Embryology The study of embryos
Cladogram Chart of the relatedness of organisms based on their traits.
Ancestor Relative from your past
Descendants Your children/their children/ their children's children.
Finite resource A resource that runs out.
Population A group of the same species living in the same area.
Stasis / equilibrium When a population is balanced and no change is occurring.
Created by: kpartin
 

 



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