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Taking the 'Identical' Out of Identical Twins

Identical twins may not have identical DNA, says this New York Times article. According to new research published in the March issue of The American Journal of Human Genetics, scientists who studied genes of 10 pairs of identical twins found that not only do epigenetic changes abound, but copy number variations at the DNA level are also prevalent. "In the meantime, a lot of biology textbooks may need updating," says the Times story.

The Scan

Fertility Fraud Found

Consumer genetic testing has uncovered cases of fertility fraud that are leading to lawsuits, according to USA Today.

Ties Between Vigorous Exercise, ALS in Genetically At-Risk People

Regular strenuous exercise could contribute to motor neuron disease development among those already at genetic risk, Sky News reports.

Test Warning

The Guardian writes that the US regulators have warned against using a rapid COVID-19 test that is a key part of mass testing in the UK.

Science Papers Examine Feedback Mechanism Affecting Xist, Continuous Health Monitoring for Precision Medicine

In Science this week: analysis of cis confinement of the X-inactive specific transcript, and more.