Chromatin-Stained Banding Patterns

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Human Uniqueness Compared to "Great Apes": 
Absolute Difference

Chromosome banding employs multiple techniques such as Giemsa (G), reverse (R), centromere (C), and quinacrine (Q) banding to dye chromosomes during mitosis. Humans have unique constitutive heterochromatin (C-band) patterns, with novel C bands on the long arm of chromosome Y and in the pericentric regions of chromosomes 1, 9 and 16. Smaller C bands shared with non-human primates are found at the centromere of each chromosome and on the p arms of chromosomes 13, 14, 15, 21 and 22.

The Human Difference: 

Constitutive heterochromatin expansion
Centromeric expansion

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  1. "Bar-coding" primate chromosomes: molecular cytogenetic screening for the ancestral hominoid karyotype., Müller, S, and Wienberg J , Hum Genet, 2001 Jul, Volume 109, Issue 1, p.85-94, (2001)