Origin of a Giant Sex Chromosome

• Published in: Molecular biology and evolution Vol. 38; no. 4; pp. 1554 - 1569
• Main Authors: Conte, Matthew A, Clark, Frances E, Roberts, Reade B, Xu, Luohao, Tao, Wenjing, Zhou, Qi, Wang, Deshou, Kocher, Thomas D
• Format: Journal Article
• Language: English
• Published: United States Oxford University Press 01.04.2021
• Subjects: Analysis; Discoveries; Fishes; Genes; Genomes; Genomics; Sex determination, Diagnostic; Transposons; China; genome evolution; chromosome fusion; supernumerary chromosome; chromosome evolution; genetic conflict; sex chromosomes

Abstract Chromosome size and morphology vary within and among species, but little is known about the proximate or ultimate causes of these differences. Cichlid fish species in the tribe Oreochromini share an unusual giant chromosome that is ∼3 times longer than the other chromosomes. This giant chro...