Men produce sperm women produce

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Reproduction is the process by which organisms make more organisms like themselves. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not essential to keeping an individual alive. In the human reproductive process, two kinds of sex cells, or gametes GAH-meetz , are involved. The male gamete, or sperm, and the female gamete, the egg or ovum, meet in the female's reproductive system. When sperm fertilizes meets an egg, this fertilized egg is called a zygote ZYE-goat.
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By Roxanne Khamsi. Sperm stem cells are normally found in the testes, where they divide to help provide a continuous supply of sperm. While sperm stem cells have two sets of chromosomes, mature sperm capable of fertilising eggs have only one set. In a first step towards creating artificial sperm cells, researchers have turned human bone marrow tissue into primitive sperm cells.
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Sperm and eggs: the basics of human sex cells

But recently a team of scientists announced they had made artificial sperm from human bone marrow , and media reports abounded with the dire news that my goodfellas and by extension, me had been rendered unnecessary. There are at least half a dozen reasons why such speculation is silly, some scientific and some practical. For example, as long as sex feels good and remains no more expensive than dinner and a bottle of wine, most people will use natural-grown sperm. Still, suggests Gregory Stock, director of the program on medicine, society and technology at the UCLA School of Medicine and the CEO of a biotech company called Signum Biosciences, it is very interesting that there were any stories at all.
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An Australian research team has solved one of biology's most fundamental questions — why males produce sperm and females produce eggs. The finding is a breakthrough that could lead to improved infertility treatment, cancer therapy and pest management. The team, led by Dr Josephine Bowles and Professor Peter Koopman from the Institute for Molecular Bioscience at The University of Queensland, has discovered that derivatives of Vitamin A trigger the beginning of egg and sperm production, a process known as meiosis. The cells that eventually turn into either eggs or sperm — known as germ cells — are identical in male and female embryos.
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