honors bio vocab unit 7

Front

Endosymbiotic Theory

Back

States that many years ago, respiratory and photosynthetic prokaryotic cells were engulfed and became mitochondria and chloroplasts in eukaryotic cells.

Front

Speciation

Back

The process by which new species form. It occurs when groups in a species become reproductively isolated and diverge.

Front

Common ancestor

Back

One species being the ancestor of two or more species.

Front

Genetic Drift

Back

A mechanism by which allele frequencies of a population change over generations due to chance.

Front

Selective breeding (artificial selection)

Back

The process by which humans develop particular traits by choosing which organisms to breed in order to get the desired traits.

Front

Natural Selection

Back

The process through which populations of living organisms adapt and change; survival of the fittest.

Front

Allele

Back

Different forms of a gene that can exist at a specific locus on a chromosome.

Front

Mutation

Back

A change in the DNA sequence that can lead to new traits in an organism.

Front

Gene Flow

Back

Any movement of individuals, and/or the genetic material they carry, from one population to another.

Front

Homologous Structures

Back

Anatomical features in different species that share a common ancestry.