Question

Two normal parents have three normal children: one son and two daughters. Their son and one of their daughters marry and also have normal children. Their second daughter, mary, marries a man with a rare, recessive blood disorder. They have two children, and both children develop the blood disorder. What must be true of the genotypes of mary's parents?

Answer 1

mary's parents would be normal because it's a recessive disorder means blood disorder is recessive and it it needs only career and the career in this situation is marie's husband himself