LIFE SCIENCE

Detailed explanation-1: -Founder effect A change in the genetic composition of a population as a result of descending from a small number of colonizing individuals.

Detailed explanation-2: -Evolution is a process that results in changes in the genetic material of a population over time. Evolution reflects the adaptations of organisms to their changing environments and can result in altered genes, novel traits, and new species.

Detailed explanation-3: -Genetic drift occurs in all populations of non-infinite size, but its effects are strongest in small populations. Genetic drift may result in the loss of some alleles (including beneficial ones) and the fixation, or rise to 100% frequency, of other alleles.

Detailed explanation-4: -The founder effect is a well-known cause of differentiation between populations that span a great distance. This is known as the serial founder effect, if the individual populations spread over a geographic distance do not interbreed.

Detailed explanation-5: -Genetic drift describes random fluctuations in the numbers of gene variants in a population. Genetic drift takes place when the occurrence of variant forms of a gene, called alleles, increases and decreases by chance over time.