In a population of seals, most of the seals have similar coloring. However, one seal has albinism. This seal is white and is almost completely blind. What is most likely the cause of this difference from the rest of the population?

Albinism is usually caused by a change in a gene that affects pigment production. That gene mutation can make the seal’s coloring white and may also cause vision problems. Genetic drift, gene flow, and natural selection describe changes in populations, not the specific genetic change that causes albinism in one seal.

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