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A team led by investigators at the University of Georgia presents in G3: Genes Genomes Genetics a 10,080-locus genetic map of the sunflower genome, which it produced based on multiple crosses. Integrating genotypic data for four sunflower mapping populations, the researchers produced a consensus linkage map of the sunflower genome, through which they found localized variation in recombination rates in several genomic regions and "observed several gaps up to 26 cM in length that completely lacked mappable markers in individual crosses," they report. However, because the regions varied by cross, the consensus map did not contain gaps, "clearly illustrating the value of simultaneously analyzing multiple mapping populations," the team adds.

The Scan

Not Yet a Permanent One

NPR says the lack of a permanent Food and Drug Administration commissioner has "flummoxed" public health officials.

Unfair Targeting

Technology Review writes that a new report says the US has been unfairly targeting Chinese and Chinese-American individuals in economic espionage cases.

Limited Rapid Testing

The New York Times wonders why rapid tests for COVID-19 are not widely available in the US.

Genome Research Papers on IPAFinder, Structural Variant Expression Effects, Single-Cell RNA-Seq Markers

In Genome Research this week: IPAFinder method to detect intronic polyadenylation, influence of structural variants on gene expression, and more.