Pocket Mouse Closer

Mutations are caused by selective pressure in the environment.

• True

• False

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-4

The same mutation could be advantageous in some environments but deleterious in others.

• True

• False

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

The appearance of dark-colored volcanic rock caused the mutation for black fur to appear in the rock pocket mouse population.

• True

• False

Tags

NGSS.HS-LS3-2

NGSS.HS-LS4-2

NGSS.HS-LS4-4

You are studying a recently discovered population of rock pocket mice with dark-colored fur that lives on volcanic rock. You take a DNA sample from a member of this new population and determine the DNA sequence of a gene known to play a role in fur color. The sequence you get is identical to that of the same gene in another rock pocket mouse population with dark-colored fur that live on a different patch of volcanic rock. Which of the following could explain this observation?

• The mice in the two populations evolved from the same ancestral population.

• The volcanic rock caused the same mutation in each rock pocket mouse population, resulting in dark coloration.

• The exact same random mutation spontaneously arose in the two different populations

For the rock pocket mouse, which of the following contributes to selective pressure favoring dark-colored fur? (Choose all that apply)

• Predators

• Genetic mutations

• Rock color

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

The MCr1 mutation across a variety of species shows that

• evolution is by design.

• new mutations of melanism comes from a common ancestor.

• evolution of melanism is a repeatable process.

• selection for melanism is random.