Vertebrate Zoology Exam 1
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14 Terms
polymorphism vs polyphenism
two or more traits arising from different genotypes vs two or more traits arising from the same genotype
phenotypic plasticity
range of phenotypes produced from same genetype, arise from multiple factors that may represent either adaptive or nonadaptive modification
norm of reaction
pattern of phenotypic expression of a single genotype across a range of environments
heterochrony
variation in timing of expression
heterotropy
variation in location of gene expression
heterometry
variation in amount of gene product
Bergmanns’s Rule
colder guys are bigger
Allen’s Rule
colder guys have shorter limbs
Gloger’s Rule
wet guys are darker
Island Rule
size evens out (big guys shrink and little guys grow) on islands
Jordan’s Rule
colder guys have more (fin rays?)