Scientific Source #145 – Medical Textbook
“Reproduction depends on the union of male and female gametes (reproductive, or germ, cells) each with a half set of chromosomes, to form a new individual with a full, unique set of chromosomes.” 145
145 Human Physiology: From Cells to Systems 2nd Cd Ed,Sherwood, Kell & Ward, 2013, Nelson Education Ltd. 736.