The ABO blood group is one set of blood antigens. Ther is a separate locus (H) that controls the presentation of these antigens on the cell surface. Individuals who are homozygous, hh, cannot present the antigens of the ABO type (and appear to be O-type). Consider the following cross: P0: IAi Hh x IBi Hh a. What is this type of inheritance pattern called? b. Complete the Punnett square to determine the phenotypic frequencies of the apparent blood groups among the offspring:

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.