FLASHCARDS PreAP Unit 2 Set 1 Vocab

Front

Allele

Back

Letter representing a version of a gene.

Front

Genotype

Back

The genetic code an organism has (ex: AA, Aa, or aa).

Front

Phenotype

Back

The physical traits you can see (like eye color, height, or flower color).

Front

Evolutionary relationship

Back

The connection between species that shows how closely they are related through common ancestors.

Front

Species

Back

A group of organisms that can reproduce together and make fertile offspring.

Front

Homologies

Back

Traits or structures shared by different organisms because of common ancestry.

Front

Vestigial Structures

Back

A body part that an organism still has but no longer needs for its original purpose (ex: tailbone, male nipples).

Front

Common ancestry

Back

The idea that different species today came from the same past ancestor.

Front

Theory of evolution

Back

The scientific explanation of how species change over time through natural selection and other processes (ex: gene mutations).

Front

Relative dating

Back

Telling how old a fossil is compared to others by looking at rock layers.