Evolutionary Biology Flashcards
Define Natural Selection:
The differential reproductive success of individuals based on variations in heritable traits favored by the environment.
Which part of the definition of natural selection did T. Malthus contribute to?
“differential reproductive success”
Which part of the definition of natural selection did JB Lamarck add?
“heritable traits”
Which part did E. Darwin and G. St. Hilaire (as well as others) add?
“favored by the environment”
Define Evolution:
A change in allele frequencies in a population over time.
Define pleiotropy:
(noun) the production by a single gene that can produce two or more traits
Define epistasis:
(noun) a trait that is affected by multiple genes
Give a theoretical example of a heterozygous gene.
Aa
Give a theoretical example of a homozygous gene.
AA or aa
Give a theoretical example of a hemizygous gene.
A__ or a__
Who was the prosecution attorney for the Scopes Monkey Trial?
William Jennings Bryan
In a population, there are 20 AA, 300 Aa, and 65 aa. What is the frequency of A?
F(A)=.44
=[2(#AA)+(Aa)] / [2(AA+Aa+aa)]
then trunk the answer
What is the equation for the Null Test?
(p^2)+2pq+(q^2)=1.0
F(A)= p F(a)= q
Define Phenotype:
the trait
It is influenced by both genetics and the environment .
Define Allele:
different versions of the same locus
