testicle
(Science: anatomy) One of two glandular bodies contained in the scrotum of the male, they form sperm and also the male sex hormone testosterone.
One of the two male reproductive glands that produce spermatozoa and secrete androgens; she kicked him in the balls and got away.
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The hominid family diversified from the apes around 6 to 8 million years ago. Since then, the evolutionary path has prov..
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Regulation of Biological Systems tutorials are focused on the modulation of biological systems from cell to population l..
The diversification of several new species from a recent ancestral source, each adapted to utilize or occupy a vacant ad..