鸡 / Chicken My embryos help scientists study limb-building instructions shared with mammals—your arms and chicken wings make intriguing classmates! 我的胚胎帮助科学家研究和哺乳动物共享的肢体建造程序——你的胳膊和鸡翅,是有趣的同班同学! Sources Sequence and comparative analysis of the chicken genome provide unique perspectives on vertebrate evolution https://www.nature.com/articles/nature03154 Requirement for BMP signaling in interdigital apoptosis and scale formation. https://doi.org/10.1126/science.272.5262.738 Species reference https://en.wikipedia.org/wiki/Chicken Research context Chickens connect dinosaur ancestry with an accessible developmental model. Their embryos help test how vertebrate limbs, faces and organs are patterned, including mechanisms shared with mammals.