Highly repetitive sequences of DNA in chromosomes.

Base Sequence Biological Evolution Cell Nucleolus/analysis Cell Nucleus/analysis Centrifugation, Density Gradient Chromosomes/analysis DNA/analysis,isolation & purification DNA Replication DNA, Single-Stranded/analysis,isolation & purification Heterochromatin Hydroxyapatites Nucleic Acid Denaturation Nucleic Acid Hybridization Nucleic Acid Renaturation Nucleotides/analysis Pyrimidines/analysis Ribosomes Species Specificity Temperature

DNA, Single-Stranded Heterochromatin Hydroxyapatites Nucleotides Pyrimidines DNA