Related topics: sperm

Liverwort study reveals sperm release mechanism in bryophytes

Using liverwort (Marchantia polymorpha) as a model, researchers led by Prof. Li Hongju from the Institute of Genetics and Developmental Biology of the Chinese Academy of Sciences have explored the molecular mechanism of sperm ...

How plants choose their mates and repel other suitors

A group of scientists from Nagoya University in Japan has used a specialized microscopic technique to observe the internal reproduction process of the Arabidopsis plant. Their findings, published in EMBO Reports, reveal the ...

Asexual propagation of crop plants gets closer with new study

When the female gametes in plants become fertilized, a signal from the sperm activates cell division, leading to the formation of new plant seeds. This activation can also be deliberately triggered without fertilization, ...

Membrane transporter ensures mobility of sperm cells, study finds

Special proteins known as membrane transporters are of key importance for the mobility of sperm cells. A research team from the Heidelberg University Biochemistry Center (BZH) headed by Prof. Dr. Cristina Paulino has, with ...

page 1 from 21


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