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.

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.

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.

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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.