New Robertsonian translocation chromosomes in domestic sheep (Ovis aries).
We report two new Robertsonian centric fusions, designated t4 and t5, in New Zealand Romney sheep. Q- and G-banding studies show that sheep chromosomes 5 and 8 are fused in t4 and that chromosomes 8 and 22 are fused in t5. The presence of large blocks of centromeric heterochromatin in t4 and t5 suggests that the fusions may be of recent origin.
Gene Mapping Unit, AgResearch Grasslands, Palmerston North, New Zealand.
P D
PD
Pearce
H A
HA
Ansari
D W
DW
Maher
A A
AA
Malcolm
I A
IA
Stewart-Scott
T E
TE
Broad
D000818:Animals; D002871:Chromosome Banding / Q000662:veterinary; D005260:Female; D007621:Karyotyping / Q000662:veterinary; D008297:Male; D012756:Sheep / Q000235:genetics*; D014178:Translocation, Genetic