âThereâs called free circulating DNA, the fetus, some of its DNA gets into the maternal blood and we can actually detect that DNA -- the accuracy of these tests are about 99 percent,â Dr. Abdullah said, âWe can do this test around 10 weeks, so itâs very early in the pregnancy.â.
Daytona International Speedway is 2.5 miles (4 km) long and a 500-mile race requires 200 laps to complete. However, the race is considered official after half its distance (100 laps or 250 miles (400 km)) has been completed.
The time it takes for a horse to run a mile depends on it's speed, level of training and fitness and how much weight it is carrying. A Thoroughbred can run a mile in roughly 2 minutes, while it usually takes other breeds 3 or more minutes. Secretariat ran the mile and a quarter Kentucky Derby in 1:59 2/5. He ran the mile and a half Belmont Stakes in 2:24 flat. Most good thoroughbreds can run a mile in under a minute and thirty seconds.