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Approximately how much of the human genome codes for proteins?
Amore than 80%
Babout 25%
Cabout 50%
Dless than 2%
Answer & Solution
Correct answer: D. less than 2%
Only about 1.5% of the human genome's 3.2 billion bp actually code for proteins. The rest is regulatory sequence, structural elements (telomeres, centromeres), introns and non-coding RNA genes. One of the surprises of the Human Genome Project.
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