Butterflies in your stomach? Not an issue for nearly 8000 species of fishes.

Authors :: German DP
Source :: Trends in genetics : TIG [Trends Genet] 2024 Sep; Vol. 40 (9), pp. 731-733. Date of Electronic Publication: 2024 Jul 29.
Publication Year :: 2024
Abstract: The gastric stomach is a hallmark of vertebrate evolution, yet is missing in nearly 25% of living fish species and some mammals. New work by Kato et al. shows how a cassette of genes relating to acid production, pepsins, cell adhesion, and developmental control are repeatedly lost in animals that have also lost their stomachs.<br />Competing Interests: Declaration of interests The author declares no competing interests.<br /> (Copyright © 2024 Elsevier Ltd. All rights reserved.)