0 Members and 1 Guest are viewing this topic.

quote:Gametes (sperm and egg cells contain only one copy of the DNA from the parent) either parent can supply a good gene or a defective one. Normally 50% of the gametes from each parent will contain a defective gene so on a statistical basis any child from these parents has a 25% chance of getting the problem from both parents 50% chance of getting a defective gene from one parent and being a carrier and a 25% chance of being completely clear of the problem.