The problem here is if she is trans gender, what ever that means, then it has to be unfair on the other female athletes. I don't think the South African authorities are doing her cause any justice by jumping up and down like babies that have spit their dummies. Since the composition of a protein is specified by the structure of its corresponding gene, biochemical studies based on electrophoresis permit direct study of tissue substances that are only a metabolic step or two away from the genes themselves. In medicine, the field of genetics was once confined to a few rare, heritable diseases where there was little chance for treatment or prevention. It is just highly unfortunate that Semenya has to suffer in the process, which I'm sure she is doing.
Scientists find DNA differences between gay men and their straight twin brothers
Second, whosoever in the IAAF revealed that she was under investiagtion should be fired. For many people, the primary sources of information provide unbalanced and emotive coverage of the major issues, or inaccurate or confusing advice. If she had long hair and nail varnish would this take the pressure off? Thank you for creating an article that has, at least, tried to give a little information about some forms of sexual genetic variances even if this article just shows a glassful from an ocean. Professional athletes compete in the hope of winning predominately.
BBC - Gordon Farquhar: Semenya's sex test explained
Ultrasound is a good alternative test for blood test to determine gender because it is safe and accurate in determining baby sex. There are precedents of males being altered surgically to compete as females and the fact that she has internal testes is a possible indication of medical tampering. This explains why not everyone who has inherited the gene fault will develop cancer - other factors are still required to produce the somatic changes. Recombinant DNA studies of immunoglobulin genes in mice have revealed that the light-chain genes are encoded in four separate parts in germ-line DNA: Men and women participate in different classes because they are different. What worries more about this situation is the fact that this person took 7 seconds off their best time for the m in less than a year.
Inheritance in humans does not differ in any fundamental way from that in other organisms. As I said earlier unfair advantage is going to be a really tricky thing to decide. You may be offered a genetic test for a number of different reasons: That's why suspicion grew, not to mention the deep voice and the visible facial hair. But there is nothing "wrong" with being a hermaphrodite - it's not a "malfunction" in a normative sense.