News tagged with sperm cells

Related topics: sperm

Male birth control gel to go into trials

A team at the US National Institute of Child Health and Human Development has announced that it will be putting a contraception gel it has developed into trials starting this April. The trials will involve more than 400 couples ...

Dec 22, 2017
popularity141 comments 0 report

Spermatozoon

A sperm, from the ancient Greek word σπέρμα (seed) and ζῷον (living being) and more commonly known as a sperm cell, is the haploid cell that is the male gamete. It joins an ovum to form a zygote. A zygote is a single cell, with a complete set of chromosomes, that normally develops into an embryo.

Sperm cells contribute half of the genetic information to the diploid offspring. In mammals, the sex of the offspring is determined by the sperm cell: a spermatozoon bearing a Y chromosome will lead to a male (XY) offspring, while one bearing an X chromosome will lead to a female (XX) offspring (the ovum always provides an X chromosome). Sperm cells were first observed by Anton van Leeuwenhoek in 1677.

This text uses material from Wikipedia, licensed under CC BY-SA

Subscribe to rss feed