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Identical twins have long been researchers' favourite guinea pigs because they hold the key to answering one of the greatest scientific questions of our time: nature, or nurture? World-renowned genetic epidemiologist Dr. Tim Spector recently found out that by probing twins' differences, rather than their similarities, we can learn how the environment and heredity interact to actually change our genes! Research on epigenetics could help solve medical...
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Twins are rare, occurring in about 1 percent of all pregnancies. Of that number, 30 percent are identical twins. The other 70 percent are nonidentical, or fraternal, twins. A single baby, identical twins, and fraternal twins differ from one another in their development. With a single baby, when fertilization occurs the egg cell is fertilized by a single sperm cell to form a zygote. Over the next few days, the fertilized egg cell divides repeatedly...
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English
Description
One in every 100,000 sets of twins is born joined together. Some will be separated by complex, often risky surgical procedures. But what causes twins to be born this way? What can doctors do to help them? And what are the prospects for those who have no option but to spend their lives joined together? Filmed in the United States, South Africa, Russia, and Poland, this documentary tells the story of some of the most dramatic recent separations of conjoined...