Dna Repetitive Sequences Types Distribution And

Cytogenetics Lecture 1: Introduction to Clinical Cytogenetics

DNA Classification •Human genome comprises unique (75%) and repetitive (25%) DNA sequences •Unique sequence occurs once per haploid (1n) set, includes genes and non-coding sequence –Genes: n= ~20,000, genome is 1.5% exonic, 26% intronic, ~8% regulatory, distribution is uneven •Repetitive sequence includes tandemly arranged,

  Distribution, Sequence, Repetitive, And sequence