Explain any three molecular (genetic) evidences in favour of organic evolution.

Explanation

The evidence in favour of organic evolution are as follows: (i) Evidence from paleontology and metabolic process : Paleontology is the science which studies past life with the help of fossils. It provided various valuable reasons for organic evolution because it is based on study of fossils which are formed over time. Same biochemical reactions are found from bacteria to humans. Fossils which are formed by preserving under rocks or at sea level provide the information about developmental changes occurred from simple to complex and more developed forms. Energy released is stored in ATP molecules which is released oxidation of glucose and nitrogenous wastes in all living organisin is produced in the form of ammonia. (ii). .Evidence from Genetics : Genetics is the branch of science which deals with the study of heredity. Mutation caused in any organism can lead to new species. Some important mutations include Ancon Sheep, Double Toed Cats, Hornless Cattle, Red Sunflower, Large-sized Banana, etc. Light coloured moth Biston betularia underwent a mutation to produce a dark from Biston carbonaria. (iii) Evidence from embryology and cytology : Embryology is the study of early growth and development of organisms. Monocots and dicots are quite different from each other but show similar embryonic development pattern which indicates that monocots have evolved from dicots. Basic cell structure of cell is same in all organisms. Mitochondria are same in plants and animals and other organelles such as plastics, chloroplasts are same.