mutations

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.

Example Sentences

What's more, in recent years rats have developed genetic mutations that give them some immunity to these powerful drugs too.

From BBC

These acquired mutations produce new variants, which is why both the COVID-19 mRNA and the whole-virus flu vaccine get updated annually – to keep up with natural changes in the virus.

From Salon

Eventually, a version of the virus collects enough mutations that it has a slight edge over other viruses, and if other factors line up, it can sweep through a population.

From Los Angeles Times

The author provides CDC statistics showing dramatically lower case and death rates among vaccinated populations compared to unvaccinated individuals, and explains that widespread vaccination actually decreases mutations by limiting viral replication opportunities.

From Los Angeles Times

Ms Folbigg has always maintained her innocence, and in 2023 a landmark inquiry into her case found her children could have died of natural causes because of incredibly rare gene mutations.

From BBC