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18 Cards in this Set
- Front
- Back
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extinction caused by catotrosphic events
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mass extinction
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extinction that always occur, new species rise through specitation
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background extinction
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what is the evidence of the KT event
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iridium, shocked quartz, microtektites, chicxulub impact site, asteroid 10-15 km diameter
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what does LUCA stabd for
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last universal common ancestor
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changes to a single base
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point mutations
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switching a puriine for a purine or a pyrimadine for a pyirmadine
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transition
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swithcing a purine for a pyrimadine or vice versa
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transversion
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point mutations that result in an amino acid change
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replacement substituionsor nonsynonymous
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point mutations that result in no change
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silent site or synonymous
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small numbers of bases that had been inserted into or deleted from the genome
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indels
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duplicated genes can diverge andtake on different functions
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gene families
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chance mistake caused by the proteins involvedd in managing the genetic recombination that occurs during meiosis
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unequal cross over
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nonfucntional loci
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pseudogenes
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genes that are duplicated and then diverge in sequence
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paralogous
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the tendency for alleles of diffrernt genes to assort together during meiosis
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linkage
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inversion over a geographic area
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cline
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average proportion of loci that are heterozygous per individual
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mean heterozygosity
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percent polymorphic
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frequency of loci that thave at least 2 alleles
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