The diploid human genome comprises 6,4 * 10^9 bp and fits into a nucleus that is 6 μm in diameter.    If base pairs occur at intervals of 0.34 nm along the DNA helix, what is the length of DNA in a human cell  If the diameter of the DNA helix is 2,4 nm, what fraction of the volume of the nucleus is occupied by DNA? [volume of a sphere is (4/3)πr^3 and volume of a cylinder is πr^2h]

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Genome annotation

The technique of linking biological information to genome sequences is termed genome annotation. Gene annotation is the method of identifying gene locations and coding sections. It helps us understand what these genes are doing in the body through establishing structural characteristics and linking them to the actions of various proteins.