According to the theory of natural selection, genes responsible for new traits that are beneficial to the survival of a species in a particular environment will usually:

Increase in frequency.

Explanation:

The theory of natural selection states that genetic variations are present in the natural populations. Some organisms have one or more genetic variations which in turn increase their chances of survival and enable them to reproduce more. These organisms leave more progeny. It results in an increase in the frequency of those beneficial genetic variations in the population over the generations. This is how natural selection favors adaptive genetic traits and increase their frequency in the populations.

nucleic acid molecules are incredibly complex, containing the code that guarantees the four different nucleotide units comprise dna, the nucleic acid of interest to the genealogist. and one of four nitrogen-containing molecules called nucleotides

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