Effects of Mutations Practice Test

Model of a gene change and outcomes:

Before: GENE = T T G | Protein outcome: pigment protein works normally

After: GENE = T A G | Protein outcome: pigment protein is changed and works less well

Evidence: Organisms with the changed gene are lighter colored and are eaten more often by predators in their habitat.

Which outcome of the mutation is supported by the model and evidence?

A model compares the same mutation in two environments.

Gene before: C G A Gene after: C A A Protein outcome: Protein changes shape slightly.

Evidence:

• In snowy habitat: organisms with the mutation survive better and have more offspring.
• In dark forest habitat: organisms with the mutation survive worse and have fewer offspring.

Which statement about mutation effects is correct based on the model and evidence?