Evidence of Evolution

Front

What is the relationship between the number of DNA bands and species relatedness?

Back

Species with the fewest number of DNA bands in common are most distantly related.

Front

What are analogous structures?

Back

Structures that perform similar functions but arise from different embryonic tissues, such as insect wings and bird wings.

Front

What does a common ancestor indicate in a phylogenetic tree?

Back

A common ancestor is the species from which multiple species (A, B, C, and D) have evolved.

Tags

NGSS.MS-LS4-2

Front

How does DNA difference relate to the closeness of species?

Back

Two organisms that are closely related will have fewer differences in their DNA.

Front

What are homologous structures?

Back

Structures that are similar in different species due to shared ancestry, such as the tails of opossums and whales.

Tags

NGSS.MS-LS4-2

Front

Define evolution.

Back

Evolution is the process through which species change over time through genetic variation and natural selection.

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Front

What is natural selection?

Back

Natural selection is the mechanism by which individuals with favorable traits are more likely to survive and reproduce.

Tags

NGSS.MS-LS4-4

Front

What is a vestigial structure?

Back

A vestigial structure is a body part that has lost its original function through evolution, such as the human appendix.

Tags

NGSS.MS-LS4-2

Front

What is the significance of fossil evidence in evolution?

Back

Fossils provide evidence of past life forms and show how species have changed over time.

Tags

NGSS.MS-LS4-1

Front

What is genetic drift?

Back

Genetic drift is a change in allele frequencies in a population due to random sampling of organisms.

Tags

NGSS.HS-LS4-2