To predict: The mode of inheritance of flower color in the given plant species. Introduction: Gregor Mendel was an Austrian monk, who worked on the pea plant to observe the pattern of inheritance of certain characters from the parent plant to the offsprings. He termed genes as factors that are passed from one generation to another. He proposed three laws, which came to be known as Mendel’s law of genetics.

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Chapter 3, Problem 31QP

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To predict: The mode of inheritance of flower color in the given plant species.

Introduction: Gregor Mendel was an Austrian monk, who worked on the pea plant to observe the pattern of inheritance of certain characters from the parent plant to the offsprings. He termed genes as factors that are passed from one generation to another. He proposed three laws, which came to be known as Mendel’s law of genetics.

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A plant geneticist is examining the mode of inheritance of flower color in two closely related species of exotic plants. The first species may have two pure-breeding lines—one produces a distinct red flower; and the other produces flowers with no color at all, or very pale yellow flowers. However, she cannot be sure. A cross of these varieties produces all pink-flowered progeny. The second species exhibits similar pure-breeding varieties; that is, one variety produces red flowers; and the other produces an albino or very pale yellow flower. A cross of these two varieties, however, produces orange-flowered progeny exclusively. Analyze the mode of inheritance of flower color in these two plant species.

Mendel obtained his initial pea plant varieties from local breeders who were developing new varieties that might be useful or interesting. To generate these new varieties, breeders formed hybrids between existing varieties of different phenotypic characteristics by cross pollination, using techniques they doubtless taught to Mendel. After producing a hybrid, they allowed several generations of self-pollination, as happens naturally if the flowers are not disturbed. a. How many generations would it take for a breeder to have produced new pure-breeding varieties using this approach? b. What is the probability that an individual in each of these generations (F2, F3, and F10) would be homozygous for one or the other allele of this gene?

Mendel obtained his initial pea plant varieties from local breeders who were developing new varieties that might be useful or interesting. To generate these new varieties, breeders formed hybrids between existing varieties of different phenotypic characteristics by cross pollination, using techniques they doubtless taught to Mendel. After producing a hybrid, they allowed several generations of self-pollination, as happens naturally if the flowers are not disturbed. a. How many generations would it take for a breeder to have produced new pure-breeding varieties using this approach? i. First, consider just one heterozygous gene in the F1 hybrid. What is the probability that an individual of the F2 generation would be heterozygous for that gene? ii. What is the probability that an individual in the F3 generation would be heterozygous for this gene? iii. What is the probability that an individual in the F10 generation would be heterozygous for this gene? iv. What is the…