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.
Pearce
P D
PD
Gene Mapping Unit, AgResearch Grasslands, Palmerston North, New Zealand.
Ansari
H A
HA
Maher
D W
DW
Malcolm
A A
AA
Stewart-Scott
I A
IA
Broad
T E
TE
D000818:Animals; D002871:Chromosome Banding / Q000662:veterinary; D005260:Female; D007621:Karyotyping / Q000662:veterinary; D008297:Male; D012756:Sheep / Q000235:genetics*; D014178:Translocation, Genetic