Threshold characteristics display only two possible phenotypes—the trait is either present or absent.

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#Id: 2168

#Unit 11. Evolution and Behavior

Fitness is as the number of offspring an individual leaves in the next generation.

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#Id: 2169

#Unit 11. Evolution and Behavior

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.

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#Id: 2170

#Unit 11. Evolution and Behavior

The components of fitness are survival and reproduction.

TLS Online TPP Program

#Id: 2171

#Unit 11. Evolution and Behavior

Fitness

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#Id: 2172

#Unit 11. Evolution and Behavior

Selection coefficient - which is the relative intensity of selection against a  genotype

Selection coefficient (1 - W)

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#Id: 2173

#Unit 11. Evolution and Behavior

Proportional contribution of genotypes to population