However, one cross (I Ai mother x I Bi father) is most informative.Īll contents copyright © 1998-2004. Answer (1 of 3): Inheritance of blood type follows a non-Mendelian pattern of Co-Dominance. All four crosses must be considered to determine all potential offspring. Individuals are typed as Vel-positive or Vel-negative. The blood group consists of a single antigen, the high-frequency Vel antigen, which is expressed on the surface of red blood cells. įour different genetic crosses are possible. The Vel blood group is a human blood group that has been implicated in hemolytic transfusion reactions. (blood type B) could be either homozygous or heterozygous. The relationship between blood type (phenotype) and genotype is With a specialist’s referral - paid for by the NHS.
Type A and B individuals can be either homozygous (I AI A or I BI B, respectively), or heterozygous (I Ai or I Bi, respectively).Ī woman with type A blood and a man with type B blood could potentially have offspring with which of the following blood types? Rhesus factor test in men testing the woman's RhD can also predict the blood type of possible children. In a hurry Browse our pre-made printable worksheets library with a variety of activities. The possible human phenotypes for blood group are type A, type B, type AB, and type O. Twelfth Grade (Grade 12) DNA, RNA, and Genetics questions for your custom printable tests and worksheets. There areĬodominant, and the i allele is recessive. Type O is routinely in short supply and in high demand by hospitals both because it is the most common blood type and because type O negative blood is the universal blood type needed for emergency transfusions and for immune deficient infants. Why O negative blood can be used in transfusions for any blood type. Human blood type is determined by codominant alleles. Universal donors are those with an O negative blood type. Problem 11: Codominant alleles: The human ABO markers