Data/hora: 05/06/2024 00:54:53

Provedor de dados: 	42	
País: 	Brazil	
Título: 	Transmission rate variation among three B chromosome variants in the fish Prochilodus lineatus (Characiformes, Prochilodontidae)	
Autores: 	PENITENTE,MANOLO; VOLTOLIN,TATIANA A.; SENHORINI,JOSé A.; BORTOLOZZI,JEHUD; FORESTI,FAUSTO; PORTO-FORESTI,FáBIO.	
Data: 	2013-01-01	
Ano: 	2013	
Palavras-chave: 	Supernumerary chromosomes; Controlled crosses; Curimbatá; Cytogenetic; Inheritance.	
Resumo: 	Cytogenetic studies were developed in Prochilodus lineatus (Valenciennes 1836), describing an interesting system of small supernumerary chromosomes. The purpose of this work is to study the frequency and morphology of B chromosomes in individuals from the parental line and the inheritance patterns of these elements in individuals obtained from controlled crosses in the species P. lineatus. The transmission rate of B chromosomes revealed a kB=0.388 for the acrocentric type, a kB=0.507 for the metacentric type and a kB=0.526 for the submetacentric type. The obtained results raise hypothesis that B-acrocentric chromosomes are involved in an extinction process in this species, while the metacentric and submetacentric supernumerary elements comprises a neutral mechanism and follows a Mendelian transmission rate.	
Tipo: 	Info:eu-repo/semantics/article	
Idioma: 	Inglês	
Identificador: 	http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652013000401371	
Editor: 	Academia Brasileira de Ciências	
Relação: 	10.1590/0001-3765201387611	
Formato: 	text/html	
Fonte: 	Anais da Academia Brasileira de Ciências  v.85 n.4 2013	
Fonte: 	info:eu-repo/semantics/openAccess