Venter’s company, Human Longevity Inc, will provide the tests at a cost of $250 each through a special incentive program offered by Discovery Ltd, an insurer with clients in South Africa and the United Kingdom. Venter, the U.S. scientist who raced the U.S. government to map the human genome 15 years ago for a cost of $100,000, said the $250 price point per whole exome marks a new low in the price of gene sequencing.