Sperm is the male gamate of human beings .
Sperm can be divided into head , neck , middle piece and tail .
These are produced in the testes .
Sperms are motile .
It contains either X or Y chromosomes .
Centriols are are present in sperm .
The Structure and Functions of Liver The liver is the largest solid organ in the body. It removes toxins from the body's blood supply, ...
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