According to the theory of evolution by natural selection, anatomical and molecular homologies should indicate similar patterns of evolutionary relatedness.
What is natural selection?
- Natural selection is a process of differential survival as well as reproduction in which the organisms which are more adapted to their environment survive and give birth to more offspring than those which are less adapted.
- According to theory of evolution by natural selection, natural selection can lead to evolution i.e. the organisms better adapted to their environment have higher chances of survival and pass these favorable characters to their offspring.
- Due to changes in the environment, the organisms also change their traits thus leading to evolution.
- Anatomical and molecular homologies indicate that the organisms descended from common ancestors which undergo different changes depending upon the environment where they lived.
- The theory of evolution was proposed by Charles Darwin and Alfred Russel Wallace in the 19th century.
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