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Save Data to Gene

Georg Fritz at the University of Cologne and his colleagues are studying the way cells store and process information and then pass it on to subsequent generations of cells, reports the Technology Review's Physics ArXiv blog. The researchers say that a network of genes can act as a "conditional memory" that stores or ignores information when told to do so. "The circuit behaves similarly to a 'data latch' in an electronic circuit, i.e. it reads and stores an input signal only when conditioned to do so by a 'read command,'" the researchers say. The circuit, the blog adds, is almost like a modified version of the genetic toggle switch, but with higher levels of control.

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.