Distribution of repetitive DNA elements within Exon/Intron structures
The 14 exons [numbered
dark-green units]
for a single gene constitute a very small portion of the total
50 Kbp region. The introns [light-green areas]
include a number of families of repetitive DNA sequences, shown in the
exploded view below. These include short interspersed repeats (SINES, including Alu-family
sequences), long interspersed repeats
(LINEs, including the L1
family), long tandem repeats
(LTRs), and simple sequence repeats (SSRs)
(also known as micro- or minisatellites).