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This week in Science: Neanderthal Y chromosomes replaced by Homo sapiens Y chromosomes, and more.

Using transcription data from cells and nuclei, the researchers uncovered heterogeneity within cardiac cells and mapped them to particular regions of the heart.

With plasmid and chromosomal sequence data, European investigators identified three main routes for carbapenem antibiotic resistance spread in Klebsiella pneumoniae.

Participants were especially reluctant to donate their de-identified DNA and medical data to for-profit companies or to multiple entities.

Researchers studied the genetic structure of Viking Age Scandinavian populations, along with migrations and the adoption of Viking culture by non-Scandinavians.

Two new papers have identified thousands of genetic loci with ties to more than two-dozen blood cell traits in individuals from up to five ancestry groups.

Analyzing genome sequences from dozens of cases and controls, researchers saw an IBD-associated jump in somatic mutations in colonic crypt samples.

Some population-specific structural variation was shared with archaic human groups, suggesting they arose through long-ago introgression.

Independent research teams have tackled the genetic history of the Levant, Anatolia, and other parts of the Near East to retrace population movement and mixing since the Bronze Age.

In Nature this week: method to cluster cells based on single-cell RNA sequencing reads, synthetic genomics platform reconstructs SARS-CoV-2, and more.

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Novavax has begun a phase III trial of its SARS-CoV-2 vaccine, according to the New York Times.

Vox reports that the Trump Administration may limit student visas for individuals from some countries to two years.

The governor of New York says the state will conduct its own review of any SARS-CoV-2 vaccine, NPR reports.

This week in Science: Neanderthal Y chromosomes replaced by Homo sapiens Y chromosomes, and more.