9A 9B Bell Ringer

Studying which of the following would provide the best evidence that two organisms share a common ancestor?

• Amino acid sequence

• Habitat

• Dietary requirements

• Social group interactions

Answer explanation

Studying amino acid sequences would provide the best evidence that two organisms share a common ancestor as similarities in sequences indicate a closer evolutionary relationship.

Tags

NGSS.HS-LS4-1

The idea that similar species descend from the same original species is known as ____.

• Common ancestry

• Developmental homology

• Anatomical homology

• Homologous structures.

Tags

NGSS.HS-LS4-1

What is the term for a group of structures in two or more species that have anatomical similarities but different functions?

• Homologous structures

• Vestigial structure

• Common ancestry

• Developmental homology

What is the term for a structure that is found in an organism but no longer serves a major purpose, although it previously did in that organism's ancestors?

• Vestigial structure

• Homologous structures

• Common ancestry

• Developmental homology

Tags

NGSS.MS-LS4-2

______: evolution occurs over a long period of time.

• Gradualism

• Punctuated Equilibrium

______: evolution occurs over a short period of time.

• Gradualism

• Punctuated Equilibrium