Selection and Evidence for Evolution

A fossil is found in Layer E and Layer D. Which fossil will prove to be oldest?

• Fossil in layer E

• Fossil in layer D

• They are relatively the same age.

Which statement is NOT TRUE of evolution?

• Causes a change in the gene pool of a species.

• Means change over time.

• Can happen by natural selection.

• Means that humans came from monkeys.

What is letter G referring to?

• An old rock layer.

• A new type of rock.

• A fault (crack in rock), probably resulting in an earthquake.

Fossils found in rock give us a(n)...

• relative age

• absolute age

The four necessary components for ARTIFICIAL SELECTION to occur is genetic variation, _____________, selection and time

• Overproduction

• Struggle to survive

• Inheritance

The four necessary components for NATURAL SELECTION to occur is overproduction, genetic variation, ___________________, & reproductive success.

• selection

• struggle to survive

• time

• inheritance

Why do offspring have slightly different traits than their parents. (choose all correct answers)

• mutations (changes in DNA)

• they inherit more DNA from one parent than another

• genetic variation between parents

• they only inherit dominant traits

An example of a homologous structure 

• human arm and bird wing
• rat appendix  and human appendix
• wing of butterfly and bird wing

Tags

NGSS.MS-LS4-2

An example of an analogous structure includes:

• wing of a butterfly and bird wing
• bird wing and human arm
• rat appendix and human appendix

Embryos of chickens, fish and humans look very similar. They all have folds known as gill pouches in the neck region. What may this suggest?

• they all formed in the ocean 
• they all evolved from a common ancestor
• they are all going extinct