AP BIOLOGY

Detailed explanation-1: -Some mutations have a positive effect on the organism in which they occur. They are calledbeneficial mutations. They lead to new versions of proteins that help organisms adapt to changes in their environment. Beneficial mutations are essential for evolution to occur.

Detailed explanation-2: -The majority of mutations are neutral in their effects on the organisms in which they occur. Beneficial mutations may become more common through natural selection. Harmful mutations may cause genetic disorders or cancer.

Detailed explanation-3: -Natural selection selects those genetic mutations that make the organism most suited to its environment and therefore more likely to survive and reproduce.

Detailed explanation-4: -Some mutations-known as beneficial mutations-have a positive effect on the organism in which they occur. They generally code for new versions of proteins that help organisms adapt to their environment.