Sentences with phrase «allele frequencies over»

With the help of giant genomic data sets, scientists can now track these evolutionary shifts in allele frequencies over short timescales.

Not exact matches

Evolution the fact is defined as a change in allele frequency in a population over time.

Using Atlantic killifish (Fundulus heteroclitus), the researchers examined whether mitochondrial - nuclear interactions alter the frequency of alternative forms of a gene that arise by mutation, called alleles, for over 11,000 nuclear DNA sequence variations within a population of the fish with mixed ancestry.

«If the resistance alleles had a high fitness cost, we should have seen them decrease in frequency or disappear over the six generations,» Tranel says.

Today, evolution is defined as the change in the frequency of alleles in populations over time.