Website review: Identical Twins Genes Are Not Ident...
Someone discovered this in Genetics
•14 reviews since Apr 4, 2008
genetics, twins, science
•sciam.com/article.cfm
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Reviews of this website
DocBarleycorn rated 2 months ago- Ain't this a little slice of special. Now, if they DID have the same DNA, wouldn't that biologically make them the same person? And If they're the same person it wouldn't be incest, just masturbation? A feller can dream, can't he?
- risforrun rated 3 months ago
- See, I consider Stumble to be a teaching tool. I learn things. <3
- Hsiaokuo62 rated 3 months ago
- From the page: ""I believe that the genome that you're born with is not the genome that you die withâ€"at least not for all the cells in your body," he says. Charles Lee, a geneticist at Brigham and Womenâ€s Hospital in Boston, agrees. Genetic variations can arise after a double strand of DNA breaks when exposed to ionizing radiation or carcinogens. "It reminds us to be careful about our environment because our environment can help to change our genome," he says. Plus, these variations may predict age-related diseases. Lee adds: "As you age … your chances for having a genomic rearrangement that causes a certain disease increases all the time." The differences between identical twins increase as they age, because environmentally triggered changes accumulate. But twins can also begin their lives with differences, according to Bruder's study, and that calls into question their very name. "Maybe we shouldn't call them identical twins," Harvard's Bieber says. "We should call them 'one-egg twins.'" "
- VirianFlux rated 3 months ago
- Major twin study flaw, a cloud with a silver lining! Indentical twins thought to have genetically identical Genes, may well actually have duplicates of some genes in one of the twins. This means that a load of Twin Studies have a genetic component component that has not been taken into account, and could perhaps be the undoing of many twin studies that seek to seperate enviromental differences from genetic ones. But there is a twist: researchers could data-mine where there is duplicate genes to find genes responsible for genetic differences! Say one twin develops Schizophrenia (for example), and another does not, this might be able to give us a far better idea of genetic components for it. This little problem could just turn into a big breakthrough!
- Inertial-Mass rated 3 months ago
- From the page: Normally people carry two copies of every gene, one inherited from each parent. "There are, however, regions in the genome that deviate from that two-copy rule, and that's where you have copy number variants," Bruder explains. These regions can carry anywhere from zero to over 14 copies of a gene. Scientists have long used twins to study the roles of nature and nurture in human genetics and how each affects disease, behavior, and conditions, such as obesity. But Bruder's findings suggest a new way to study the genetic and environmental roots of disease. For example, one twin in Bruder's study was missing some genes on particular chromosomes that indicated a risk of leukemia, which he indeed suffered. The other twin did not. Bruder therefore believes that the differences in identical twins can be used to identify specific genetic regions that coincide with specific diseases. Next, he plans to examine blood samples from twin pairs in which only one suffers from asthma or psoriasis to see whether he can find gene copy number changes that relate to either of these illnesses.
- JesseMat rated 3 months ago
- From the page: ""Maybe we shouldn't call them identical twins," Harvard's Bieber says. "We should call them 'one-egg twins.'""
- LeonardoDaVinci rated 3 months ago
- Three points about this article: 1). I love Scientific American. The articles are always enlightening and ALWAYS mind-expanding! No Discovery Magazine pablum is to be found within SA's pages, only "hard" science. 2). This particular article proves (or shows?) that, once an organism (in this case, a twin) is in its own, separate, self-contained environment (the body), it is subject to the same mutations from that environment, and the effects of the outer environment on the inner (environment!) as any other organism. (In microcosm, how evolution works?). 3). And this one is MOST important!: This blows what I call the "Judge Dredd" Hypothesis (the movie, not the books) completely out of the water. This, of course, is the theory that states that your identical twin can commit a crime, which YOU can be blamed for later in a pivotal court room scene, where there is plenty of gavel banging and calls for "Order in the court! Order in the court!". :0)
