a) An allele frequency changes in a population would indicate that evolution has occurred.
- Allele frequencies in a population can shift by chance alone due to sampling error from generation to generation, and this is a phenomenon known as genetic drift.
- Genetic drift is a random process that can produce significant population changes quickly.
- Allele frequencies in a population are a reflection of genetic variety. Allele frequencies that fluctuate over time may be a sign of genetic drift or a population that has undergone new mutations.
- The population is evolving if the frequencies of alleles or genotypes differ from the value predicted by the Hardy-Weinberg equation.
- The allelic frequency is stable from generation to generation in populations that are in the Hardy-Weinberg equilibrium, and the distribution of alleles may be calculated.
DISCLAIMER
Which event would indicate that evolution has occurred?
a) An allele frequency changes in a population.
b) An animal gets fat.
c) A white-eyed fly is born into a population of brown-eyed flies.
d) A new predator comes
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