mutations

Cultural  

1. Changes in chromosomes or genes that cause offspring to have characteristics different from those of their parents. Mutations can be caused by the effects of chemicals, radiation, or even ordinary heat on DNA. Mutations produce some of the differences between members of a species on which natural selection acts.

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Example Sentences

Through genetic mutations, many bacteria are becoming less responsive to commonly used drugs, making infections harder to treat and more likely to persist.

From Science Daily

One major reason is that the stem cells responsible for producing blood and immune cells can accumulate genetic mutations over time, increasing the risk of cancer and other health problems.

From Science Daily

The same mutations also appear in certain uterine, skin and breast cancers.

From Science Daily

Under this view, mutations are usually neither helpful nor harmful, allowing them to spread quietly without being strongly favored or rejected by natural selection.

From Science Daily

Although Alzheimer's occurs only in humans, scientists study it using specially engineered mice that carry genetic mutations known to cause the disease in people.

From Science Daily