Three Alleles Inheritance


It is easy to know that the calculation of 3 genes inheritance would be very complicated. In the studies of peas, the three traits commonly studied were the height of pea stems (tall and dwarf), the colours of seed coats (yellow and green) and the shapes of the peas (round and wrinkled). In these studies, F1 individual can produce 23 = 8 types of gametes, the total number of F2 can up to 43 = 64, and the number of genotypes in F2 is 33 = 27. So, the calculation would be time consuming and easy in making errors. If you are required to make fast and accurate calculation, some shortcuts are necessary.


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(16.09.2006)