Genetic variation describes naturally occurring genetic differences among individuals of the same species. This variation permits flexibility and survival of a population in the face of changing ...

One manufacturer of DNA microarrays, Affymetrix, now offers a chip containing approximately 1.8 million different genetic markers. When a fragment of DNA from a test sample hybridizes to a probe ...

Variation is the differences between individuals of the same species, caused by genetic and environmental factors. Surveys into variation give data that are continuous, which means to come in a ...

Questions about individual variation (behavior, morphology, and physiology) and population patterns (social and genetic structure, population stability, species boundaries) are usually addressed in ...

A gene is a fundamental unit of heredity, consisting of a specific sequence of DNA that encodes the instructions for making a particular protein or set of proteins. Genes are passed down from parents ...

Researchers examined data for 628 species studied between 1985 and 2019. The greatest losses in genetic variation were seen in birds and mammals. Findings were published in the journal Nature. “When a ...