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Epigenomics, Abridged

Mother Jones' Joe Kloc this week presents his "illustrated guide to epigenetics" — four figures are paired with explanatory text that describes the processes of methylation and histone modification for a lay audience. Kloc explains epigenetics by answering his own straightforward questions, such as "How can different types of epigenomes develop from the same genome?" and "Why do scientists care?" He says that if the genome is a "how-to manual that contains instructions for every possible task required for a complex living creature to survive," then the epigenome "tells each cell which part of the manual to read."

The Scan

Two J&J Doses

Johnson & Johnson says two doses of its SARS-CoV-2 vaccine provides increased protection against symptomatic COVID-19, CNN reports.

Pfizer-BioNTech Vaccine Response in Kids

The Pfizer-BioNTech SARS-CoV-2 vaccine in a lower-dose format appears to generate an immune response among children, according to the Washington Post.

Chicken Changes to Prevent Disease

The Guardian writes that researchers are looking at gene editing chickens to help prevent future pandemics.

PNAS Papers on Siberian Dog Ancestry, Insect Reproduction, Hippocampal Neurogenesis

In PNAS this week: ancestry and admixture among Siberian dogs, hormone role in fruit fly reproduction, and more.