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Mendallian Genetics (Punnett Squares (is a chart that allows me to…
Mendallian Genetics
Punnett Squares
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A heterozygous is a big b and a small b (Bb) The gametes are at the top and the females are along the side
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genotype (AA) is 1/4 and Bb is also 1/4 the actual percentage will vary from parent, and there are 100's of crosses between each
the phenotypes are determined by the B and the b 3/4 will have the same (75) and 1/4 will have white flowers (25)
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Can occur in 16 different combinations, this is called a dihybrid cross both parents are heterozygous
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Test Cross
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the test cross can also be determined or used to determine the missing genotypes, for example for the F2 generation the entire row is missing then you would need theses to determine what you are missing over all
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