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 number of laps in a NASCAR race varies depending on the size of the track, and the distance raced. It will usually say something about it in the name of the race. For exam â¦ ple, the Daytona 500 is 500 miles. They race 200 laps. Click on the link below for more information on different Nascar tracks.