Natural Selection Flashcard 2 Review 2025

Front

What do you call all of the genes in a population?

Back

Gene pool

Front

What is a species?

Back

A group of organisms that can mate with each other and produce fertile offspring.

Front

Which trait should go where A is on the cladogram?

Back

eyes

Front

What type of reproductive barrier is created when a flash flood carries a raft of Amazon ants away from their original population?

Back

geographic isolation

Front

What is sympatric speciation?

Back

A speciation in which new species evolve from a single ancestral species while inhabiting the SAME geographic region.

Front

What is the definition of relative frequency in genetics?

Back

The proportion of a specific allele compared to the total number of alleles for that gene in a population.

Front

What is genetic drift?

Back

A mechanism of evolution that refers to random changes in allele frequencies in a population.

Front

What is the significance of a phylogenetic tree?

Back

It illustrates the evolutionary relationships among various biological species based on their physical or genetic characteristics.

Front

What is allopatric speciation?

Back

A speciation that occurs when populations are geographically isolated from each other.

Front

What is behavioral isolation?

Back

A reproductive barrier that occurs when two populations have differences in mating behaviors.