Lecture 3 Questions

Lecture 3 Questions - Lecture 3: Study Questions 1. Why was...

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Lecture 3 : Study Questions 1. Why was Mendel’s approach to the study of heredity so successful? 2. What is the difference between genotype and phenotype? 3. What is the principle of segregation? Why is it important? 4. How are Mendel’s principles different from the concept of blending inheritance discussed in Chapter 1? 5. What is the concept of dominance? How does dominance differ from incomplete dominance? 6. What are the addition and multiplication rules of probability and when should they be used? 7. Give the genotypic ratios that may appear among the progeny of simple crosses and the genotypes of the parents that may give rise to each ratio. 8. What characteristics of an organism would make it well suited for studies of the principles of inheritance? Can you name several organisms that have these characteristics? 9. In cucumbers, orange fruit color (R) is dominant over cream fruit color (r). A cucumber plant homozygous for orange fruits is crossed with a plant homozygous for cream fruits. The F1 are intercrossed to produce the F2. a. Give the genotypes and phenotypes of the parents, the F1, and the F2. b. Give the genotypes and phenotypes of the offspring of a backcross between the F1and the orange parent. c. Give the genotypes and phenotypes of a backcross between the F1 and the cream parent. 10. J. W. McKay crossed a stock melon plant that produced tan seeds with a plant that produced red seeds and obtained the following results (J. W. McKay. 1936. Journal of Heredity 27:110–112). Cross tan X red F1 13 tan seeds F2 93 tan, 24 red seeds a. Explain the inheritance of tan and red seeds in this plant. b. Assign symbols for the alleles in this cross and give genotypes for all the individual
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Lecture 3 Questions - Lecture 3: Study Questions 1. Why was...

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