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piRNAs: No Longer the Little Brother

In PNAS this week, researchers at the Centre National de la Recherche Scientifique have found that piRNAs play a role in post-transcriptional gene-silencing of transposable elements in Drosophila egg cells. They showed that the repression of the functional I elements located in euchromatin requires piRNA proteins, and the amount of ovarian I element piRNAs correlates with the strength of the repression.

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.