the sperm and egg whose union brings a human being into existence are not complete organisms. They are both functionally and genetically identifiable as parts of the male or female parents.

The chromosome associated with male development, which is the last mysterious piece of the human genome, has been fully sequenced ... guide the development and function of all cells in living ...

To those who view human behavior in an evolutionary framework, which we believe adds an invaluable perspective, male orgasm is no great mystery. It's little more than a physiologically simple ...

When most people think of a male orgasm, they envision the man having an explosive ejaculation of semen. However, in the human male, orgasm and ejaculation are actually two separate processes.

Human biology is the study of all aspects of the human organism including evolution, genetics, ecology, anatomy and physiology, development, anthropology, and nutrition, among others. A deep ...