Geometric Characteristics-Geometric characteristics refer to the basic elements or building blocks which form the language of geometric dimensioning and tolerancing. Generally, the term refers to all the symbols used in form, runout, profile and locational tolerancing. Geometrical Characteristics-Geometrical characteristics refer to the basic elements or building blocks, which form the language of geometric dimensioning and tolerancing. Generally, the term refers to all the symbols used in form, runout, and locational tolerancing. Definition Per.
Parent 1 and 2 have each 5 possible genotypes (OO, AO, BB, BO and AB). Here a Punnett square with each possibilities. I highlighted the possible parent genotypes. The total number of possible crosses is exactly 21. Note that here A = Ia, B = Ib and O = i. 1  OOxBB,OOxBO,OOxAB. 2  AOxBB,AOxBO,AOxAB.
Some traits are controlled by far more alleles. For instance, the human HLA system, which is responsible for identifying and rejecting foreign tissue in our bodies, can have at least 30,000,000 different genotypes. It is the HLA system which causes the rejection of organ transplants.t would not be surprising if other exceptions were discovered in the future. However, it is important to keep in mind that there are at least 18,000 human traits controlled by genes that follow the basic Mendelian rules of inheritance.