LS: Unit 7

Front

Theory of evolution

Back

A scientific theory that explains how species evolve over time through natural selection and genetic variation.

Front

Species

Back

A group of organisms that can interbreed and produce fertile offspring.

Front

Extinct

Back

A term used to describe a species that no longer exists.

Front

Fossils

Back

Preserved remains or traces of ancient organisms that provide evidence of past life on Earth.

Front

Radiometric dating

Back

A method used to determine the age of rocks and fossils based on the decay rate of radioactive isotopes.

Front

Homologous structures

Back

Body parts that are similar in structure in different species due to shared ancestry.

Front

Common Ancestor

Back

An ancestral species from which multiple species have evolved.

Front

Phylogenic tree

Back

A diagram that represents evolutionary relationships among organisms.

Front

Competition

Back

The struggle between organisms for the same resources within an environment.

Front

Hereditary

Back

The passing of traits from parents to offspring through genes.