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In Science this week, researchers at the University of Arizona report that a lateral transfer of fungal genes underlies the red pea aphid's ability to produce carotenoids. Nancy Moran and Tyler Jarvik found that the aphid genome "encodes multiple enzymes for carotenoid biosynthesis" by performing phylogenetic analyses, they were able to show that red aphids have a 30-kb region encoding a single carotenoid desaturase derived from fungal genes, which green aphids do not have.

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SARS-CoV-2 vaccine developers are evaluating further vaccine doses as well as modified doses to keep up with new viral variants, according to CNN.

The New York Times reports that a new viral variant of concern has been identified in New York City.

In Nature this week: spatiotemporally resolved map of the human cell cycle, folding single-cell RNA sequencing into cancer drug studies, and more.

According to BBC News, the global vaccine-sharing initiative has sent its first shipment, which arrived in Ghana this week.