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Position:Home>Genealogy> Is it true that 2 RH positive parents cannot have 4 RH negative children? Is 3Question: Is it true that 2 RH positive parents cannot have 4 RH negative children? Is 3 the maximum?
Best Answer - Chosen by Asker: It depends on what your genotypes are. If you are both + +, then ALL of your children will be + +. If you are both + -, then your children have a 1/2 chance of being + -, a 1/4 chance of being + +, and a 1/4 chance of being - -. If one of you is + + and the other + -, then your children have a 3/4 chance of being + + and a 1/4 chance of being + -. There is no "maximum." You could be a + -/+ - couple and have twenty children that are - - although that is quite unlikely. By the way, positive genotypes are considered + + and + -. The negative genotype is - -. The + gene is dominant. |