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We discuss the structure of genetic diagrams and use the diagrams to show inheritance in monohybrid crosses to determine the percentage chance of an offspring inheriting a specific characteristic from their parents.
We investigate crosses between individuals when there is incomplete dominance between the different characteristics and what the phenotypes will look like in such cases. We do the same with co-dominant traits.
We discuss dihybrid crosses where two independent alleles are investigated to determine the chances of two different characteristics occurring in the same individual. We also look at pedigree diagrams and how inheritance can be determined by using these diagrams.