In 1940, two researchers named Weiner and Landsteiner discovered that about 85 percent of the human population sampled possessed a blood cell protein that had been previously detected in Rhesus monkeys. This blood type was labeled Rh positive, and Rh⁺ was found to be dominant over the absence of the blood factor (Rh). Under normal Mendelian inheritance, which of the following statements is FALSE? A) Two Rh⁺ parents could have an Rh^- child. B) Two Rh^- parents could have an Rh⁺ child. C) An Rh^- child would require that both parents be carriers of at least one Rh^- gene. D) It is possible with just one pair of parents to have children where some siblings are Rh^- and some are Rh⁺. E) All of the choices are false.

Question

Quizplus · Accepted Answer

Under normal Mendelian inheritance, if both parents are Rh negative (Rh-), they cannot have an Rh positive (Rh+) child because they would both lack the dominant allele necessary to express the Rh+ phenotype.

In 1940, Two Researchers Named Weiner and Landsteiner Discovered That