Positive Selection: The Spread of Beneficial Mutations

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#Id: 9175

#XL - T Zoology

Amount of change in allelic frequency due to migration

m= proportional of migratory individual in  recipient population

qI – frequency of allele in source population  

qII – frequency of allele in recipient population

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#Id: 9176

#XL - T Zoology

Adaptation is a characteristic that enhances the survival or reproduction of organisms .

Adaptations have evolved by natural selection, which is the centerpiece of On the Origin of Species

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#Id: 9177

#XL - T Zoology

Adaptation has costly side effects

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#Id: 9178

#XL - T Zoology

Fitness 

Fitness is defined as the relative reproductive success of one genotype compared with other genotypes in the population

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#Id: 9179

#XL - T Zoology

Fitness- Average number of offspring produced by a genotype and divide it by the mean number of offspring produced by the most prolific genotype

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#Id: 9180

#XL - T Zoology

Average fitness

In a species, only 1 of every 1000 seeds survives to reproductive age, and that those that survive produce an average of 3000 seeds.