The top 20 highest-paid biopharma CEOs 1. Len Schleifer, Regeneron $41.97 million. Schleifer may have popped up on our CEO pay list just a few years ago--and stayed at or near the top--but he's been plugging away at Regeneron since he founded the company in 1988.
Most bacterial species contain a single type of chromosome, but it may be present in multiple copies. Several thousand different genes are interspersed throughout the chromosome; structural gene sequences (encoding proteins) account for the majority of bacterial DNA; nontranscribed DNA sequences between adjacent genes are termed intergenic regions.
Number and shape: The number of chromosomes present in bacteria is only 1 and it is circular in shape (no ends). In humans 46 (23 pairs) of linear chromosomes are present. The ends of the linear chromosomes are called as telomeres. Amount of DNA present in a human cell is 1000 times the DNA present in a bacterial cell.