Pristimantis ruidus was confirmed alive by matching nothing

A Frog Confirmed Alive by Matching Nothing The identification of Pristimantis ruidus in 2022 worked backwards. Geneticists at Universidad Técnica Particular de Loja ran the DNA of two newly collected females against sequences from 35 related species held in a gene bank. Every comparison came back negative. That clean sweep of non-matches was the confirmation. … Read more