The constitutive heterochromatin of porcine chromosomes.
The constitutive heterochromatin of porcine chromosomes was cytologically resolved into four types by using a combination of both C-banding techniques and base specific DNA binding fluorochromes. The four types of constitutive heterochromatin are: 1) C-band positive, A-T rich heterochromatin located in the centromeric region of acrocentric chromosomes; 2) faint C-band positive, G-C rich heterochromatin located in the centromeric region of biarm chromosomes; 3) C-band positive heterochromatin located in the long arm of the Y chromosome lacking available binding sites for either A-T or G-C specific fluorochromes; and 4) C-banding negative centromeric heterochromatin of the Y chromosome lacking available binding sites for either A-T or G-C specific fluorochromes.
D000818:Animals; D002478:Cells, Cultured; D002871:Chromosome Banding; D002875:Chromosomes / Q000648:ultrastructure; D006570:Heterochromatin / Q000648:ultrastructure*; D007621:Karyotyping; D008214:Lymphocytes / Q000502:physiology*; D008297:Male; D013552:Swine / Q000235:genetics*
D006570:Heterochromatin