What are the roles of specific genes in spermatogenesis and sperm function?

Ambergris is made by sperm whales and has been used by people for centuries. Find out what it is made from, how it ends up in the ocean and whether we still ... Exposed in such a light, I hope they will lose much of their power to harm us. Egg and sperm: A scientific fairy tale. At a fundamental level, all major ... Sep 6, 2023 ... ... sperm, eggs or a womb. The Weizmann Institute team say their "embryo model", made using stem cells, looks like a textbook example of a real ... Dec 3, 2021 ... Researchers in China have designed an alternative to plastic using an unlikely source: salmon sperm. Dec 11, 2003 ... Researchers have crossed this bridge by coaxing uncommitted stem cells to grow into sperm cells in a petri dish. They then injected the sperm into eggs. Oct 5, 2017 ... The 25 th of September was to become a very special day in the history of sperm whale watching in the Strait of Gibraltar. Oct 19, 2023 ... Pedro Huertas, 69, of Pasadena, California, pleaded guilty to a misdemeanor charge of unlawfully importing wildlife parts (carvings from sperm whale teeth and ... DNA is the hereditary material in humans and other organisms and consists of two long chains—DNA strands—that are coiled around each other, each made of ... Sep 25, 2021 ... George had had a vasectomy long before Catherine was born. She and her brother had been donor conceived in Harley Street using the sperm of two ... Jun 5, 2019 ... This process, called in vitro gametogenesis (IVG), raises the possibility that babies could be made using muscle or liver or blood cells.