Cystic Fibrosis Is Caused By A Recessive Allele

d. Humans may have Rh blood or Rh- blood. Rh means theperson has a certain group of proteins on the surface of their red blood cells. In humans, Rh blood dominates Rh-. Normal hemoglobin dominates sickle cell hemoglobin (assume this gene is on a different chromosome than the one for Rh). If one parent is heterozygous for both genes and the other parent is heterozygous for Rh and homozygous for normal hemoglobin, what is the probability that they will produce a child who is homozygous dominant for both traits Answer Rh rh Rh RhRh Rhrh rh Rhrh rhrh As per the question both the parents are heterozygous for Rh factor hence of their children will be homozygous dominant for it. While, in the case of second allele that is sickle cell anemia allele, one parent is heterozygous for sickle cell allele while, other is homozygous for normal one so, S S S SS SS s Ss Ss Hence, of their children are homozygous dominant for this trait. Now, according to the law of probability, Probability of two events occurring together shall be equal to the product of their individual probability. So, the probability that they will produce a child who