Question

Which event describes a change where evolution has happened?

•A school of fish moves to a new environment.

•A species of tree dies out.

•An allele frequency changes in a population.

•A white-eyed fly is born into a population of brown-eyed flies.

Answer 1

The correct option is C) An allele frequency changes in a population.

Step-by-step explanation:

Natural selection tends to favour those organisms which can adapt to changes in the environment and pass on their characteristics to their offsprings. A change in the allele frequency of a population will arise when certain organisms of the species become more adapted to live in a particular environment. The other organisms with not so favourable might get completely eradicated from the environment and hence evolution will occur.