Answer the following question in your own word.
Why is it necessary for people to have their blood examined before marriage?
It is necessary for people to have their blood examined before marriage because the genetic disorders are transmitted only by reproduction. If a carrier/sufferer of a genetic disorder marries a person who is also a carrier/ sufferer of the disorder, then there are chances that disorder will be passed on to the offsprings. In order to prevent this transmission, people should get their blood examined before marriage to know if they are a carrier of any genetic disorder.