define two and three fector crosses
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A Two Factor Cross
Each F1 plant had the genotype Rr:Tt, and produced the four gametes seen at the sides of the diagram by Independent Assortment. The genotypes seen in the center of the square represent the possible genotypes of the F2 generation.
A Three Factor Cross
In genetics, a three-point cross is used to determine the loci of three genes in an organism's genome. An individual heterozygous for three mutations is crossed with a homozygous recessive individual, and the phenotypes of the progeny are scored.
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