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Because in field conditions corn (maize) is cross pollinated. Under laboratory conditions, it is made homozygous by repeated self-pollination for at least 5 generation to attain 99 % homozygosity. The homozygous parents when crossed will show independent assortment of alleles.

In lab, one can predetermine the genotypes you want to cross with.

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Related Questions

What does FOIL method in genetics mean?

The FOIL method in genetics refers to a technique used for predicting the genotypes of offspring from two parents, particularly in dihybrid crosses. FOIL stands for "First, Outside, Inside, Last," which helps to systematically combine alleles from each parent. By applying this method, geneticists can determine all possible allele combinations and the resulting phenotypic ratios of offspring. It's a useful tool for visualizing and organizing genetic crosses involving two traits.


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