Domestic sheep Ovis aries are quadrupedal , ruminant mammals typically kept as livestock. Like most ruminants, sheep are members of the order Artiodactyla, the even-toed ungulates. Although the name sheep applies to many species in the genus Ovis , in everyday usage it almost always refers to Ovis aries. Numbering a little over one billion, domestic sheep are also the most numerous species of sheep. Sheep are most likely descended from the wild mouflon of Europe and Asia.
'No gay gene' says major study, but genetics does influence sexual behaviour
Farmer Sutra! Are gay rams really a problem in the sheep industry? | Environment | The Guardian
The largest ever study of its kind examined data and DNA information of about , people and found there were thousands of genetic variants linked to same-sex sexual behaviour, most of the them having a minor impact. The researchers, writing in Science , suggested genetics may account for as much as one-third of the various factors that determine whether someone is attracted to same-sex partners. The study looked at survey responses and performed analyses known as genome-wide association studies Gwas on data from more than , people who had given DNA samples and lifestyle information to the UK Biobank and to the genetics testing company 23andMeInc, which is based in the US. Related slideshow: 33 of the most amazing science breakthroughs in history Provided by Photo Services. Marie Curie is known for her discoveries around radiation and radioactivity, a word which she coined. She discovered two new elements, polonium and radium, and helped with the development of X-rays.
The Incredible Shrinking Sheep of Scotland
By Helen Phillips. A study of gay sheep appears to confirm the controversial suggestion that there is a biological basis for sexual preference. The work shows that rams that prefer male sexual partners had small but distinct differences in a part of the brain called the hypothalamus, when compared with rams that preferred to mate with ewes.
News alert: the sheep of Scotland are shrinking! On Soay Island, off the western coast of Scotland, wild sheep are apparently defying the theory of evolution and progressively getting smaller. In short, because of climate change.