List the salient features of Human Genome.

Explanation

(i) The human genome contains 3164.7 million nucleotide bases.
(ii) The average gave consists of 3000 bases, but sizes vary greatly, with the largest known human genes being dystrophic at 2.4 million bases.
(iii) The total number of genes is estimate at 30,000. In which almost all (99.9%) nucleotide bases are exactly the same in all people.
(iv) The functions are known for are 50% of genes.
(v) Less than 2% of genome codes for protein.
(vi) Repeated sequences make up large portion of human genome.
(vii)Repetitive sequences are starches of DNA sequences that are repeated many times, sometimes hundred to thousand times. They are thought to have no direct coding sequence, but they shed light on chromosome structure, dynamics and evolution.
(viii)Chromosome 1 has most genes (2968), and Y chromosome has fewest (231).
(ix) 1.4 million locations with single base DNA differences (SNPs) occur in humans. It provides information about disease associated sequences and to trace human history,