List the salient features of the Human Genome

Explanation

Salient features of human genome:
`*` The human genome contains 3164.7 million nucleotide bases.
`*` The average gene consists of 3000 bases. Dystrophin gene which is the largest known human gene has 2.4 million bases.
`*` The total number of genes is estimated at 30,000
`*` Almost all (99.9%) nucleotide bases are exactly the same in all people.
`*` The functions are unknown for over 50 per cent of the discovered genes.
`*` Less than 2% of the genome codes for proteins.
`*` Repeated sequences make up very large portion of the human genome. These are thought to have no direct coding functions, but they shed light on chromosome structure, dynamics and evolution .
`*` Chromosome-1 has most genes (2968), and the Y has the least (231).
`*` There are 1.4 million locations where single base DNA differences (SNPs) occur. These help in finding chromosomal locations for disease-associated sequences and tracing human history.