Biology and sexual orientation
hideBiology and sexual orientation is the subject of research into the role of biology in the development of human sexual orientation. No simple, single cause for sexual orientation has been conclusively demonstrated, and there is no scientific consensus as to whether the contributing factors are primarily biological or environmental. Many think both play complex roles. The American Academy of Pediatrics and the American Psychological Association have both stated that sexual orientation probably has multiple causes. Research has identified several biological factors which may be related to the development of a heterosexual, homosexual, or bisexual orientation. These include genes, prenatal hormones, and brain structure. Conclusive proof of a biological cause of sexual orientation would have significant political and cultural implications.
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News tagged with genetic basis
Researchers show efficacy of gene therapy in mouse models of Huntington's disease
Medicine & Health / Neuroscience
Oct 30, 2009 |
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Researchers at the California Institute of Technology (Caltech) have shown that a highly specific intrabody (an antibody fragment that works against a target inside a cell) is capable of stalling the development of Huntington's ...
Absent pheromones turn flies into lusty Lotharios
Oct 14, 2009 |
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(PhysOrg.com) -- When Professor Joel Levine's team genetically tweaked fruit flies so that they didn't produce certain pheromones, they triggered a sexual tsunami in their University of Toronto Mississauga ...
Genetic conflict in fish led to evolution of new sex chromosomes
Oct 01, 2009 |
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University of Maryland biologists have genetically mapped the sex chromosomes of several species of cichlid (pronounced "sick-lid") fish from Lake Malawi, East Africa, and identified a mechanism by which new ...
Invasive Species on the March: Variable Rates of Spread Set Current Limits to Predictability
Sep 17, 2009 |
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(PhysOrg.com) -- Whether for introduced muskrats in Europe or oak trees in the United Kingdom, zebra mussels in United States lakes or agricultural pests around the world, scientists have tried to find new ...
Beautiful plumage: Feather color and sex start the species revolution
Aug 05, 2009 |
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Faculty of 1000, the leading scientific evaluation service, has highlighted research providing evidence for the evolution of a new species.
Study shows animal mating choices more complex than once thought
Jun 08, 2009 |
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When female tiger salamanders choose a mate, it turns out that size does matter - tail size that is - and that's not the only factor they weigh.
Genes that influence start of menstruation identified for first time
May 17, 2009 |
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Researchers from the Peninsula Medical School, along with collaborators from research institutions across Europe and the United States, have for the first time identified two genes that are involved in determining when girls ...
For adolescent crime victims, genetic factors play lead role
Other Sciences / Social Sciences
May 14, 2009 |
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Genes trump environment as the primary reason that some adolescents are more likely than others to be victimized by crime, according to groundbreaking research led by distinguished criminologist Kevin M. Beaver ...
Neutralizing tumor growth in embryonic stem cell therapy
May 06, 2009 |
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Researchers at the Hebrew University of Jerusalem have discovered a method to potentially eliminate the tumor-risk factor in utilizing human embryonic stem cells.
Brain protein central to both Parkinson's, drug addiction identified
May 04, 2009 |
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Scientists have identified a protein that appears not only to be central to the process that causes Parkinson's disease but could also play a role in muting the high from methamphetamine and other addictive drugs.
Researchers confirm gene variants associated with the most common adult leukemia (w/Video)
Apr 20, 2009 |
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A national team of researchers led by Mayo Clinic has found that patients with chronic lymphocytic leukemia (CLL) are more likely to have similar DNA changes or variants in up to six genes, compared to people who do not have ...
Scaling the wall of deafness
Apr 14, 2009 |
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Despite modern medicine, one in 1,000 American babies are born deaf. The numbers increase markedly with age, with more than 50% of seniors in the United States experiencing some form of hearing loss.
Genetic marker for insecticide resistance in mosquitoes identified
Biology /
Feb 04, 2009 |
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Research led by the Liverpool School of Tropical Medicine has identified the genetic basis for resistance to commonly-used insecticides in one of the major malaria-carrying mosquitoes in Africa.
The genes in your congeniality: Researchers identify genetic influence in social networks
Jan 26, 2009 |
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Can't help being the life of the party? Maybe you were just born that way. Researchers from Harvard University and the University of California, San Diego have found that our place in a social network is influenced in part ...
