Mutations happen when DNA doesn’t copy correctly. How could this be beneficial for a population? Claim: Evidence: Reasoning:

These mutations lead to new versions of proteins that help an individual better adapt to changes in his or her environment. For example, a beneficial mutation could result in a protein that protects an individual and future generations from a new strain of bacteria.

Explanation:

Mutations in the DNA can sometimes give offspring new proteins which can help them to adapt to certain conditions. Mutations that help organisms are called "beneficial mutations".

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the sphincter muscles at the end of the digestive tract is the anus.

the answer to your question is tooth decay.