Variation in land-snail shell form has been extensively documented, but its causes are poorly understood. For no character are there general rules relating shell form to environmental characteristics, ...

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The impact of the coronavirus disease 2019 (COVID-19) pandemic has been starkly unequal across race and ethnicity. We examined the geographic variation in excess all-cause mortality by race and ...

AMES, Iowa – The newly assembled genomes of 26 different genetic lines of corn illustrate the crop’s rich genetic diversity and could pave the way for a better understanding of what genetic mechanisms ...