Dihybrid Cross Problem 2: When does a phenotype ratio of 9:3:3:1 occur? A phenotype ratio of 9:3:3:1 in the offspring of a mating of two organisms heterozygous for two traits is expected when: A. the genes reside on the same chromosome B. each gene contains two mutations C. the gene pairs assort independently during meiosis D. only recessive traits are scored E. none of the above

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A:

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Q: Section I: Monohybrid Simple Mendelian Genetics The following question refer to the pedigree chart…

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Q: A. How many gamete classes would be formed from the following genotype: Tt Rr Ss Gg Yy?   B.…

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Inheritance and Mendelian Genetics

Inheritance means the passing of traits to offspring from parents. These traits could be passed either through asexual reproduction or sexual reproduction. The offspring receives the genetic material from the parents. Mendelian inheritance is a certain biological inheritance that follows the rules and principles laid down by Gregor Mendel in 1865. The initial hypothesis was considered wrong, but other inheritance theories modified the concept of inheritance and thus genetics.