MONOHYBRID CROSS PROBLEMS 1. In a certain plant, yellow fruit, Y, is dominant to white fruit, y. A heterozygous plant with yellow fruit is crossed with a plant with white fruit. Determine the probable genotypic and phenotypic ratios resulting from this cross. 2. Determine the probable genotypic and phenotypic ratios expected from crossing two heterozygous plants from the cross in the previous question. 3. Assume that brown eyes is dominant to blue eyes. A father who is heterozygous brown eyed and a heterozygous brown eyed mother have children. A) What are genotypes and phenotypes of the offspring? B) What is the probability of them having a blue eyed child?

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