Rock pocket mice are rodents native to the southwest. Normally, the rock pocket mice are tan-colored rodents living in the sandy
environment of the west. However, a mutation introduced an allele for dark fur. Scientists are now studying the populations of tan
pocket mice living in the sandy environment along with the mutant black mice
thriving on dark lava rock from an old lava flow.
The rock pocket mice are living examples of evolution occurring today. Which of these statements supports that idea? Select all
three that apply.
A)
Natural selection is random.
B)
Organisms develop mutations to help them survive.
A mutation is a random change to an organism's DNA sequence
D)
The selection pressure can be different depending on the particular
environment
E)
Mutations that increase the fitness of an organism increase in frequency in
a population