Selection pressure may result in appearance of mutations: is it true or false?

1 Answer

The statement is false.


Mutations are accidental changes in the DNA: they are not a result of selective pressure. Selective pressure will determine which of the mutations may remain in gene pool and be passed on to further generations.

The selective pressure has no effect on the appearance of random mistakes on DNA. Environmental conditions may cause the mutations. For example UV radiation could be a cause of mistakes in the DNA. The selective pressure of the environment has nothing to do with such undirected random changes that occur in the DNA.