Current analysis indicates that less than 2% of the human genome codes for proteins. Based on the systems approach employed by the ENCODE project, what percentage of the genome is estimated to be transcribed at some point in at least one cell type?
A) less than 2%
B) about 50%
C) about 75%
D) 100%

Question

Quizplus · Accepted Answer

The ENCODE project estimates that about 75% of the genome is transcribed at some point in at least one cell type, indicating that much more of the genome is involved in gene regulation and cellular processes than previously thought. This is significantly higher than the percentage that codes for proteins, which is less than 2%.

Current Analysis Indicates That Less Than 2% of the Human