Evolutionary HIstory

Which species (H, I, or K) is the closest relative to Species J?

• Species H

• Species I

• Species K

• Neither

Tags

NGSS.MS-LS4-2

a body structure in two or more species that features the same parts

• shared structure

• speciation

• species

• ancestor population

Tags

NGSS.MS-LS4-2

The mystery fossil

• 
• 
• 
• 

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

a more recent species that evolved from an ancestor population

• common ancestor population

• paleontologist

• species

• descendant species

Tags

NGSS.MS-LS4-2

The body structures for a population of chimpanzees were stable for a long time. Then, their body structures changed, making the chimpanzees stronger. Why did this happen?

• Organisms naturally become stronger over time.

• It is impossible to say without more information.

• The chimpanzee population wanted to be stronger.

• Their environment must have changed.

Tags

NGSS.MS-LS1-5

Do you think the two species have a common ancestor?

• NO

• YES

Tags

NGSS.MS-LS4-1

NGSS.MS-LS4-2

an older population from which two or more newer species descended

• descendant species

• paleontologist

• common ancestor population

• shared structure

Tags

NGSS.MS-LS4-2

Two students were challenged with taking imaginary species and placing them on an evolutionary tree. Their models are shown below. Inspect the models and then answer the questions.

Which model do you think is correct?

• 
• 
• Neither

Tags

NGSS.MS-LS4-2

Imagine a population of frogs that live in the forest. The frogs have a green coloring on top that helps them blend into the forest so they are not noticed by predators.

Imagine that half of this population stayed in the forest and the other half of the population moved to the hills above the forest, which are drier, with some brown grass and brown soil.

Which population of frogs is likely to have more changes after many generations?

• Descendant Species 1: The frogs in the brown hills.

• Descendant Species 2: The frogs in the green forest.

• Neither.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS4-4

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

• paleontologist

• speciation

• descendant species

• species

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-5