Exposure the radiation such as an X-ray may change the sequence of nitrogen bases in DNA. What is this specifically called?

1) a mutation
2) a translation
3 ) a replication
4) a transcription

What the theory that the sun goes around earth was replaced with the theory that earth goes around the sun this was an exaple of a

The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease

What will happen if two of the base pairs of the stand of the dna are switched