NEET BIOLOGY

Detailed explanation-1: -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-2: -Evolution is the change in characteristics of populations of organisms over time. Changes can be small, for example, a small change in body size or a change in the color of a species’ fur.

Detailed explanation-3: -Evolution involves changes in the genetic makeup of a population. If we see more or less of a particular trait in a population over time, the population is likely evolving.

Detailed explanation-4: -Biologists, however, know that the theory of evolution has evolved over time. For example, evolutionary theory dramatically changed when Darwin’s original ideas were merged with ideas from genetics to become the Modern Synthesis.

Detailed explanation-5: -Three main mechanisms cause allele frequency change: natural selection, genetic drift, and gene flow.