Question

short notes on evolution​

Answer 1

Answer:

Evolution is the process of change in all forms of life over generations, and evolutionary biology is the study of how evolution occurs. Biological populations evolve through genetic changes that correspond to changes in the organisms' observable traits. Genetic changes include mutations, which are caused by damage or replication errors in organisms' DNA. As the genetic variation of a population drifts randomly over generations, natural selection gradually leads traits to become more or less common based on the relative reproductive success of organisms with those traits.

Answer 2

Evolution is a process witnessed in living organisms where gradual changes are observed in the characteristics of species over generations due to the process of natural selection. Charles Darwin formulated the scientific theory of evolution.

• It is based on the very fact that all species are related and eventually undergo changes over a period of time.

• It is also dependent on genetic variation in a population that has an influence on the phenotype of an organism.

• In response to the environment, an entity becomes more sophisticated over a period of time. It is a biological mechanism driven by natural selection.