Amplify Evolutionary History Chapter 2 Review

An ancestor is

• the process by which one population evolves into two or more different species

• a related organism from a previous generation

• a more recent species that evolved from an ancestor population

• a part of an organism (for example, one or more bones)

An descendent species is

• the process by which one population evolves into two or more different species

• a related organism from a previous generation

• a more recent species that evolved from an ancestor population

• a part of an organism (for example, one or more bones)

A shared structure is

• a random change to a gene that sometimes results in a new trait

• a specific characteristic of an individual organism

• a body structure in two or more species that features the same parts (for example, the same bones)

• a group of the same type of organism living in the same area

Tags

NGSS.MS-LS4-2

The Echidna, Capuchin and Bottlenose dolphin have some shared body structures. Choose ALL of the organisms that have a temporal hole in their skull.

• Echidna

• Capuchin

• Bottlenose Dolphin

Tags

NGSS.MS-LS4-2

Which organism(s) have no cervical ribs? (Select all that apply)

• Echidna

• Capuchin

• Bottlenose Dolphin

Tags

NGSS.MS-LS4-2

Which organism(s) have the same tail? (Select all that apply)

• Echidna

• Capuchin

• Bottlenose Dolphin

• All three have different tails

Tags

NGSS.MS-LS4-2

What evidence proves that all three organisms share a common ancestor?

• All three have different tails

• Only two organisms have no cervical ribs

• All three have the shared structure of a temporal hole in the skull

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-1

Based on the shared structures in this chart, which two organisms are most closely related?

• Echidna

• Capuchin

• Bottlenose Dolphin

Tags

NGSS.MS-LS4-2

Speciation is

• having died out completely and no longer alive anywhere on Earth

• a group of individuals born and living at about the same time

• when something stays mostly the same over time

• the process by which one population evolves into two or more different species

Tags

NGSS.MS-LS4-2

NGSS.MS-LS4-4

Reorder the following to describe speciation:

• Two populations become different species over a long time.

• Geographic isolation (separated by a barrier)

• One species

• Through natural selection, adaptive traits become more common, changing one population.

• Different traits become adaptive in a new environment.

Tags

NGSS.MS-LS4-4