EVOLUTION OF POPULATIONS. What is evolution? The change in the genetic make-up of a species over time. POPULATION GENETICS. Study of evolution from a genetic point of view What is a population?
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A bell curve represents the distribution of variants in a population.
Recombination in the diploid
Random fusion of gametes
Allele frequency tends to remain the same from generation to generation unless acted upon by an outside force.
In the smallest population allele frequency reaches 0 after the 45th generation = no variation
1. Birth weight in offspring
2. Seed size
Example – tongue length in anteaters