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 ...

Genetic variation within a population is measured ... both by the physical environment and by time. Consequently, the definition of populations can be refined to include groups of organisms ...

Due to the loss of genetic variation, the new population can become genetically distinct from the original population, which has led to the hypothesis that population bottlenecks can lead to the ...