Many normal genes that have important functions in promoting cell growth and division sometimes acquire mutations that cause the products of these genes to have negative effects including the development of cancer. these genes (when not mutated) are called:

Proto oncogenes.

Explanation:

Proto oncogenes may be defined as the genes that play an important role in the cell functioning and its growth. The proto-oncgenes require enzymes and proteins that are normal for the other cells.

The main function of the proto oncogene is cell division. Any mutation or change in the proto oncogene results in the formation of oncogenes. These oncogenes are responsible for the formation of the cancer development in the individual.

Thus, the answer is proto oncogenes.

a adaptation is when organism changes itself to fit the environment

ex. when its cold outside i wear a jacket

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