Question

How are the hereditary changes responsible for evolution?

Answer 1

Evolution describes the change of life form over a long period. Evolution is the cause of biodiversity on earth.

Complete step by step answer:
Evolution is the history of biology which helps us to understand the changes in flora and fauna over a long period. Evolution is the central most important idea of biology that complex living organisms evolved on earth from relatively simple ones and is the process of the gradual unfolding of the new organisms from the pre-existing primitive organisms through a slow and steady process. Thus, a vast variety of plants and animals have come into existence as a result of continuous evolutionary changes. There is much evidence that supports evolution such as hereditary changes, adaptive changes, etc.
The hereditary changes are the changes of genes or genetic characters that evolved from the pre-existing period to the modern period and these changes occur as a result of natural selection acting on the genetic variation among the individual as a result of which there is a development of various new species. Thus, hereditary evolution is the change in inherited characteristics of biological populations over successive generations. Many such pieces of evidence of hereditary evolution are there such as embryological evidence, molecular evidence, anatomical evidence, etc. The molecular changes include the changes in bio-molecules of different groups of organisms. The embryological changes are the changes of the different forms of individuals through the germ cells to the fully developed organisms.

Note: The hereditary traits go through various changes by natural selection. Hereditary changes can also take place through the mutations. The modification of inherited traits and the inheritance of the acquired characters are the main reason for the evolution of species.