The rhesus (Rh) blood group gene (Rh positive = R; Rh negati…
The rhesus (Rh) blood group gene (Rh positive = R; Rh negative = r) and a gene that causes a form of anemia called elliptocytosis (E = anemia; e = no anemia) show linkage. Of 200 offspring from a cross where one parent is Rh negative with no anemia (r___e r___e) and the other parent is Rh positive with anemia (R___E r___e): 80 are R___E r___e 80 are r___e r___e 20 are R___e r___e 20 are r___E r___e. Based off these 200 offspring, how many map units apart are the genes?