Cultural and technological innovations appear to be the main drivers of adaptation. But have they replaced biological ...

Aa Aa Aa Natural selection, genetic drift, and gene flow are the mechanisms that cause changes in allele frequencies over time. When one or more of these forces are acting in a population ...

A skeleton found in a well in 1938 appears to be the exact individual mentioned in a centuries-old text, complicating ...

The founder effect is an extreme example of "genetic drift." Genes occurring at a certain frequency in the larger population will occur at a different frequency -- more or less often -- in a ...

Influenza viruses have several features that make them well suited for this: for one, they constantly mutate in a process ...

According to this hypothesis, most of the changes in DNA inside individuals are the result of "genetic drift" -- random changes that go on all the time and aren't steered by natural selection in ...

new Omicron subvariants only had small genetic changes from their predecessors (called genetic drift). However, JN.1 was unusual in that it was 41 mutations away from XBB.1.5 (big changes like ...

Odisha government has translocated a tigress from the Tadoba-Andhari Tiger Reserve, Maharashtra, to the Similipal Tiger ...

A spotless cheetah, a sight unseen for almost a century, has been photographed in Kenya's Athi Kapiti Conservancy. This rare ...

Luke is a quantitative geneticist interested in complex trait architecture, and how evolutionary forces such as genetic drift and selection shape that architecture. Starting out in population genetics ...

Genetic drift: Rare genes are lost over time when random effects determine which genes survive across generations of bison. Random effects occur with each production of ova or sperm and with accidents ...

Aa Aa Aa Natural selection, genetic drift, and gene flow are the mechanisms that cause changes in allele frequencies over time. When one or more of these forces are acting in a population ...