Lecture 4 : Study Questions 1. What is the principle of independent assortment? How is it related to the principle of segregation? 2. In which phases of mitosis and meiosis are the principles of segregation andindependent assortment at work? 3. In snapdragons, red flower color (R) is incompletely dominant over white flower color (r); the heterozygotes produce pink flowers. A red snapdragon is crossed with a white snapdragon, and the F1 are intercrossed to produce the F2. a. Give the genotypes and phenotypes of the F1 and F2, along with their expected proportions. b. If the F1 are backcrossed to the white parent, what are the genotypes and phenotypes of the offspring? c. If the F1 are backcrossed to the red parent, what are the genotypes and phenotypes of the offspring? 4. In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant over no spots (s). The genes for these two characteristics assort independently. A homozygous plant that has bitter fruit and yellow spots is crossed with a homozygous plant
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