Day 16 (1q12): No man’s land


Day 16 is entirely “N” – no sequence is available. This is one of the vastest expanses of constitutive heterochromatin in the genome – a region that is always turned off and tightly packed. Like the centromere, the sequence is likely many copies of satellite DNA.

If you’d like to see the letter N repeated 8,584,704 times, click here for Day 16.

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