A polygenic character is controlled by two genes each with two alleles. How many different possible genotypes are there for this character?
I chose B but the answer is C and my textbook isn't much help so does anyone know why?
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Polygenic genetics help (IB) watch
- Thread Starter
- 14-11-2008 12:43
- 14-11-2008 15:28
so 9 different genotypes...although it only gives 4 different phenotypes (as AA and Aa give the same phenotype, as do BB and Bb cos they have the dominant allele).