The sex chromosomes evolve faster than we knew.

Poeciliid Research

Petrescu-Mag I. V.¹ 

关键词: involution;    ancestor;    hybridization;    recombination.;   

DOI  :  

学科分类：水产科学

来源: Bioflux SRL

【 摘 要 】

This short note is a news article. Distinct sex-determination systems have evolvedindependently in many taxa. In the Southern platyfish (Xiphophorus maculatus) both XX/XY and ZZ/ZWsystems were reported. In several populations of X. maculatus even three sex chromosomes, X, Y andW, coexist. A team of researchers has been able to observe in real-time the process of involution andrecurrence of sex chromosomes in Xiphophorus. It seems that interspecific hybridization plays aparticularly important role in speciation.

【 授权许可】

CC BY