Unit 6 Review

Front

What is the expected outcome for genes that help an organism be more successful reproductively?

Back

They can be expected to increase in frequency in the population.

Front

What is the process called when some organisms with certain traits survive and reproduce better than others?

Back

Natural Selection.

Front

What is the main source of genetic diversity in a population?

Back

Mutations.

Front

What field of study examines fossils as evidence of evolution?

Back

Paleontology.

Front

What type of traits does natural selection act upon?

Back

Inherited traits.

Front

Define 'Natural Selection'.

Back

The process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is 'Genetic Drift'?

Back

A mechanism of evolution that refers to random changes in the frequency of alleles in a population.

Front

What is 'Gene Flow'?

Back

The transfer of genetic material between populations, which can increase genetic diversity.

Front

What role do 'Mutations' play in evolution?

Back

They introduce new genetic variations that can be acted upon by natural selection.

Front

What is the significance of 'Fossils' in understanding evolution?

Back

Fossils provide evidence of past life forms and their changes over time.