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Evolutionary Relationships II
Evolutionary Relationships 2
Homologous Characteristics are the organs have the same basic structure but different functions. Ex: Fore limbs of human, fore limb of lizard Analogous characteristics are the organs have different structures but have same functions. Ex: Wing of insect, wing of bird Fossils are the remains of a plant or animal that existed in a past geological age and that has been excavated from the soil. Fossilisation is the process of fossilizing a plant or animal that existed in some earlier age.
When two unrelated organisms become quite alike after a period of time through few generations, it assumes that both have common ancestor. This phenomenon is known as Biological convergence.Broccoli, Kohlrabi, Kale are produced from its ancestor Wild cabbage by artificial selection. Tools to trace evolutionary relationships are fossils, DNA sequences and embryological evidences.
