Hence the number of new neutral mutations arising in the species per generation is 2Nmf.

That means that each generation, new neutral mutations will become fixed.

During a neutralist regime, neutral mutations accumulate, and so genetic diversity increases.

In genetics, a neutral mutation is a mutation that has no effect on fitness.

Similarly, so-called "neutral" mutations are mutations that we do not perceive to be selective.

Now that there is a redundant copy, neutral mutations can act on the duplicate.

Most commonly the neutral mutations will continue until the duplicate becomes a pseudogene.

A neutral mutation has no harmful or beneficial effect on the organism.

A neutral mutation does not bring any fitness advantage or disadvantage to its bearer.

If there are no beneficial mutations, then is equal to a random neutral mutation.