A combined team of researchers from the University of Copenhagen and the Swedish University of Agricultural Sciences reports that a certain fungus uses chemicals to trick male flies into mating with infected dead females. ...
Scientists in Brazil are preparing to release millions of factory-bred mosquitoes in an attempt to wipe out their distant cousins that carry tropical diseases. The insects' method: have sex and then die.
Plants & Animals
Oct 29, 2016
31
1628
Human eggs use chemical signals to attract sperm. New research from Stockholm University and Manchester University NHS Foundation Trust shows that eggs use these chemical signals to choose sperm. Different women's eggs attract ...
Evolution
Jun 9, 2020
10
9885
(Phys.org)—A team of researchers with the Institute for Integrative Nanosciences in Germany has tested the possibility of using sperm cells to deliver drugs to cancerous tumors in female patients. In their paper uploaded ...
Sexual preference is influenced by males' adolescent social stress history and social status, according to a research team including Nicole Cameron, assistant professor of psychology at Binghamton University, State University ...
Plants & Animals
Jan 5, 2017
13
1629
Female orgasm seems to be a happy afterthought of our evolutionary past when it helped stimulate ovulation, a new study of mammals shows.
Evolution
Aug 1, 2016
14
1555
Beetle parasites clinging to a primitive bee 100 million years ago may have caused the flight error that, while deadly for the insect, is a boon for science today.
Archaeology
Feb 12, 2020
3
26880
A small team of researchers at the University of London has attempted to measure the factors that influence the amount of pleasure a person receives from hugging another person. In their paper published in the journal Acta ...
The term "high-maintenance" is part of everyday speech, and usually refers to a woman who places a high value on her personal image, wants or needs. Often uttered within the context of dating, the implication is the woman ...
Social Sciences
May 2, 2022
46
193
Researchers from the Higher School of Economics analyzed 62 million public posts on the most popular Russian social networking site VK and found that both men and women mention sons more often than daughters. They also found ...
Social Sciences
Jan 24, 2019
0
41
Female (♀) is the sex of an organism, or a part of an organism, which produces mobile ova (egg cells). The ova are defined as the larger gametes in a heterogamous reproduction system, while the smaller, usually motile gamete, the spermatozoon, is produced by the male. A female individual cannot reproduce sexually without access to the gametes of a male (an exception is parthenogenesis). Some organisms can reproduce both sexually and asexually.
There is no single genetic mechanism behind sex differences in different species and the existence of two sexes seems to have evolved multiple times independently in different evolutionary lineages. Other than the defining difference in the type of gamete produced, differences between males and females in one lineage cannot always be predicted by differences in another. The concept is not limited to animals; egg cells are produced by chytrids, diatoms, water moulds and land plants, among others. In land plants, female and male designate not only the egg- and sperm-producing organisms and structures, but also the structures of the sporophytes that give rise to male and female plants.
This text uses material from Wikipedia, licensed under CC BY-SA
