High-resolution GTG-banded chromosomes of cattle, sheep, and goat: a comparative study.
We compared in detail the GTG-banding patterns of the chromosomes of cattle, sheep, and goat. Minor differences were revealed between the patterns of cattle on the one hand, and sheep/goat chromosomes on the other. These differences concerned mainly the pericentromeric regions of autosomes. Based on comparative data, we suggest how the contemporary cattle X chromosome might have arisen from the ancestral goat type as a result of rearrangements. No differences were found between the G-banded chromosomes of goat and sheep. Also, ideograms of the prometaphase GTG-banded chromosomes of cattle are given with descriptions of the chromosomes thought previously to be difficult to identify.
Institute of Cytology and Genetics, Russian Academy of Sciences, Siberian Department, Novosibirsk.
H M
HM
Kaftanovskaya
O L
OL
Serov
D000818:Animals; D002417:Cattle / Q000235:genetics*; D002478:Cells, Cultured; D002871:Chromosome Banding / Q000662:veterinary*; D006041:Goats / Q000235:genetics*; D012756:Sheep / Q000235:genetics*; D013045:Species Specificity; D014357:Trypsin; D014960:X Chromosome
D014357:Trypsin