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Heredity

Heredity is the transfer of biological characters from one generation to the next through genes. **

Vestigial Organs

Degenerated or underdeveloped useless organs of organisms are called as vestigial organs. 5

Fossils

Large number of organisms get buried due to disasters like flood, earthquake, volcano, etc. Remnants and impressions of such organisms remain preserved underground. These are called as fossils. 5