Front

Genetically controlled trait that enhances gene transmission ability

Back

adaptation

Front

Species adapt to their environment through

Back

natural selection

Front

Selective breeding method by humans for desirable traits

Back

artificial selection

Front

Ability of a species to pass genes to the next generation

Back

fitness

Front

All organisms are related through common ancestors.

Back

common descent

Front

Natural changes make two groups more alike and their phenotypes converge.

Back

Convergent evolution.

Front

Similar organisms evolve different phenotypes due to varying selection pressures.

Back

Divergent evolution

Front

Structures from the same embryonic tissues with different functions

Back

homologous structures

Front

Leftover remnants from past needs, like snake legs

Back

vestigal organs

Front

Alleles change frequency in a gene pool by chance.

Back

genetic drift