Evolution

Front

What is speciation?

Back

Speciation is the process by which new species arise from existing species, often due to genetic differences that occur when populations become isolated.

Front

Why did birds start eating more white moths after the industrial revolution?

Back

The white moths stood out on the dark trees, making them easier for birds to see and catch.

Front

What are mutations?

Back

Mutations are changes in the DNA sequence of an organism's genome.

Front

What is a gene pool?

Back

A gene pool is the total collection of genes and their alleles in a population.

Front

What is directional selection?

Back

Directional selection is a type of natural selection where individuals with extreme traits are more likely to survive and reproduce.

Front

What is natural selection?

Back

Natural selection is the process by which organisms better adapted to their environment tend to survive and produce more offspring.

Front

What is genetic drift?

Back

Genetic drift is a random change in allele frequencies in a population, which can lead to significant changes over time.

Front

What is stabilizing selection?

Back

Stabilizing selection is a type of natural selection that favors average individuals in a population.

Front

What is disruptive selection?

Back

Disruptive selection is a type of natural selection that favors individuals at both extremes of a trait, leading to two or more contrasting phenotypes.

Front

What is an allele?

Back

An allele is a variant form of a gene that can result in different traits.