Researchers have discovered chemical markers that can help understand how twins form and have developed a test, with an efficiency of 80%, that determines who the true twin is.
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Humans share 99% of their genetic profile with chimpanzees. Between humans, the differences are minimal, genetically speaking, but they are visible to the naked eye. The most common example we have of two nearly identical people are true twins, but even those are not genetically the same. Now, two researchers have discovered genetic modifications that only twins have.
In a report published Tuesday in the scientific journal Connections with natureResearchers Jenny van Dongen and Dorit Boomsma from the Free University of Amsterdam report discovering signs that are common among royal twins and not found in other people.
Although these chemical markers are not present in DNA, they affect the activity of genes without changing their sequence, without damaging health. Therefore, they can be used as an epigenetic signature to identify people who have given birth to true twins who were separated at birth or to show how twins are formed after fertilization.
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