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13 Cards in this Set
- Front
- Back
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What are wild type alleles |
function normally are made in right amounts |
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what are mutant alleles |
rare in nature likely to cause reduction in amount or function of encoded protein inherited in recessive fashion |
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describe lethal alleles |
essential genes are those necessary, absence lethal nonessential are not required- from mutations and recessive many prevent cell division huntingtons |
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what are conditional lethal alleles |
may kill depending on certain environments |
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describe semilethal alleles |
kill some individuals |
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describe chinchilla proteins |
at low temps some proteins doesnt work |
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what is overdominance |
when heterozygote more vigorous |
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what is incomplete penetrance |
dominant allel doesnt always show |
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what is expressivity |
e.g. polydactyl can have many or few extra digits degree of expression |
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pku |
j |
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what are sex influenced traits |
allele dominant in one sexx and recessive in a nother e.g. baldness |
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what are sex limited traits |
trait that only occurs in one sex |
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define gene interactions |
when 2 or more different genes influence outcome of single trait |
