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8.1 The factor for producing smooth peas(we will call it "S")is dominant over the factor for producing wrinkled peas(which we will call "s").Three plants(a,b, and c)have the following factors.Determine whether they will make smooth peas or wrinkled peas.
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8.2 The factor for producing yellow peas ("Y") is dominant over the factor for producing green peas ("y"). Suppose a pea plant produces yellow peas. What possible combination(s) of factors can it have?
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Biology OYO

Module 8

QuestionAnswer
8.1 The factor for producing smooth peas(we will call it "S")is dominant over the factor for producing wrinkled peas(which we will call "s").Three plants(a,b, and c)have the following factors.Determine whether they will make smooth peas or wrinkled peas. a. Wrinkled. b. Smooth. c. Smooth.
8.2 The factor for producing yellow peas ("Y") is dominant over the factor for producing green peas ("y"). Suppose a pea plant produces yellow peas. What possible combination(s) of factors can it have? YY and Yy.
8.3 Given the information in the previous question, what possible combination(s) of factors can a pea plant that produces green peas have? yy.
8.4 A student repeats one of Mendel's experiments. He self-pollinates an "Ss" pea plant, where "S" is the dominant allele for smooth peas and "s" is the recessive allele for wrinkled peas.
8.4 (continued) The result is one "SS" offspring, two "Ss" offspring, and one "ss" offspring. For each of these three sets of offspring, list the genotype, whether it is homozygous or heterozygous, and the phenotype. SS- genotype: SS; homozygous; phenotype: smooth peas. Ss- genotype: Ss; heterozygous; phenotype: smooth peas. ss- genotype: ss; homozygous; phenotype: wrinkled peas.
8.5 Using a Punnett square, predict the possible genotypes and phenotypes, along with the percentage chance for each, when a heterozygous, purple-flowered pea plant is crossed with a white-flowered pea plant. Pp, Pp, pp, pp. 50% purple, 50% white.
8.6 In the following pedigrees, a biologist studies the presence of a tail on a certain species of animal. Some individuals have a tail (represented by the gray circles and squares) and others do not (represented by the white circles and squares).
8.6 (continued) Which allele is dominant, the one for having a tail or the one for not having a tail? What are the genotypes of individuals #1-4. The one for not having a tail. 1. tt. 2. TT. 3. Tt. 4. Tt.
8.7 Suppose you are going to set up a Punnett square that concentrates on the smooth/wrinkled nature of the peas produced in a pea plant ("S" for smotth, "s" for wrinkled) and the color of the pea produced ("Y" for yellow and "y" for green).
8.7 (continued) What are all the possible allele combinations for the gametes produced by a plant that is heterozygous in both traits. SY, Sy, sY, and sy.
8.8 In domestic chicken, a change in one particular allele can affect the development of the feathers, wings, lungs, kidney, and liver. What is this an example of? Pleiotrophy.
8.9 A woman who has type A blood but carries the type O allele marries a man with type B blood who also carries the type O allele. List the possible blood types of the children, including the percentage chance for each. AB (25%), AO (25%), BO (25%), OO (25%).
8.10 Suppose the woman in the previous question was heterozygous and Rh-positive. If the father is Rh-negative, what are the possible Rh-fatcors for the children and the percentage chance of each? Pp (50%) and pp (50%).
Created by: LiseBrinkley
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