A Comparison of G- And R-Banding in Cattle and River Buffalo Prometaphase Chromosomes
作者:
期刊:
Caryologia
(Taylor Available online 1990)
卷期:
Volume 43,
issue 3-4
页码: 283-290
ISSN:0008-7114
年代: 1990
DOI:10.1080/00087114.1990.10797007
出版商: Taylor & Francis
数据来源: Taylor
摘要:
A comparison of high resolution G- and R-banding in cattle and river buffalo chromosomes was performed at the 500 band level. Close banding homologies between the two species were apparent. However a loss of pericentromeric G-positive band in chromosome arms lp, 2q, 4p and 5q and a retention of pericentromeric G-positive bands in chromosome 3 and R-positive banding patterns in the five biarmed pairs of river buffalo were observed. A comparison between sex chromosomes of the two species revealed that (a) river buffalo X and Y chromosomes were longer than cattle sex chromosomes, (b) the distal R-positive (G-negative) band in cattle Y chromosome appeared larger than the corresponding one in river buffalo Y chromosome and (c) two pericentric inversions characterized the differences between the submetacentric cattle and acrocentric river buffalo sex chromosomes.
点击下载:
PDF (1156KB)
返 回