Hybridizing #species are usually maintained by genome-wide selection against #introgression or by selection on a few “genomic islands.” @yanivbrandvain & Shelley Sianta explore #PLOSBiology study which finds a new pattern – 60 SNPs across the #genome differentiate #Penstemon species with different #pollinators. Paper: https://plos.io/3LGHkD9 Primer: https://plos.io/3RHSF9L https://fediscience.org/system/media_attachments/files/111/164/270/879/873/395/original/74158e898205c171.jpg