3. In radishes, flower color may be red, purple or white. The edible portion of the radish may be long or oval. When only flower color is studied, red X white yields all purple. If these F, purples are interbred, no dominance is evident, and the F₂ generation consists of 14 red: 2 purple: 4 white. Regarding radish shape, long is dominant to oval in a normal Mendelian fashion. Determine the F, and F₂ phenotypes from a cross between a true breeding red long radish and one that is white oval. Be sure to define all gene symbols initially.

3. In radishes, flower color may be red, purple or white. The edible portion of the radish may be long or oval. When only flower color is studied, red X white yields all purple. If these F, purples are interbred, no dominance is evident, and the F₂ generation consists of 14 red: 2 purple: 4 white. Regarding radish shape, long is dominant to oval in a normal Mendelian fashion. Determine the F, and F₂ phenotypes from a cross between a true breeding red long radish and one that is white oval. Be sure to define all gene symbols initially.

Name: 3. In radishes, flower color may be red, purple or white. The edible
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Description: 3. In radishes, flower color may be red, purple or white. The edible portion of theradish may be long or oval. When only flower color is studied, red X white yieldsall purple. If these F, purples are interbred, no dominance is evident, and the F₂gen

Biology 2e

2nd Edition

ISBN:9781947172517

Author:Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark

Chapter12: Mendel's Experiments And Heredity

Section: Chapter Questions

Problem 7RQ: Imagine you are performing a cross involving seed color in garden pea plants. What Fi offspring...

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The dominant C allele of a gene that controls color in corn produces kernels with color; plants homozygous for a recessive c allele of this gene have colorless or white kernels. What kinds of gametes, and in what proportions, would be produced by the plants in the following crosses? What seed color, and in what proportions, would be expected in the offspring of the crosses? a. CCCc b. Cccc c. CcCc
In cats, the genotype AA produces tabby fur color; Aa is also a tabby, and aa is black. Another gene at a different locus is epistatic to the gene for fur color. When present in its dominant W form (WW or Ww), this gene blocks the formation of fur color and all the offspring are white; ww individuals develop normal fur color. What fur colors, and in what proportions, would you expect from the cross AaWw Aa Ww?
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In peas, the allele Le produces tall plants and the allele le produces dwarf plants. The Le allele is dominant to le. If a tall plant is crossed with a dwarf, the offspring are distributed about equally between tall and dwarf plants. What are the genotypes of the parents?
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1. If a purebred pea plant with purple flowers was crossed with a purebred pea plant with white flowers, all of the offspring's flowers ended up being purple. In this instancethe WHITE flower trait is considered to be what?
3. Imagine you have just purchased a black stallion ofunknown genotype. You mate him to a red mare, andshe delivers twin foals, one red and one black. Canyou tell from these results how color is inherited, assuming that alternative alleles of a single gene are involved? What crosses could you do to determine howcolor is inherited?
7. The ability to roll your tongue (R) is dominant to lack of this ability (r). A. What is the genotype of a man who can roll his tongue if his father couldn’t? B. If a man who is heterozygous for tongue rolling marries a woman who is heterozygous, what would you predict for the genotypes and phenotypes of their children?
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