Monohybrid Problems with Incomplete Dominance 4. Petunia flower color is governed by two alleles, but neither allele is truly dominant over the other. Petunias with the genotype R'R' are red-flowered, those that are heterozygous (R'R²) are pink, and those with the R°R² genotype are white. This is an example of incomplete dominance. (Note that superscripts are used rather than upper- and lowercase letters to describe the alleles.) a. If a white-flowered plant is crossed with a red-flowered petunia, what is the genotypic ratio of the F, offspring? - b. What is the phenotypic ratio of the F, offspring? . c. If two of the F, offspring are crossed, what phenotypes will appear in the F2 generation?. d. What will be the genotypic ratio in the F2 generation?.

Human Heredity: Principles and Issues (MindTap Course List)
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Chapter3: Transmission Of Genes From Generation To Generation
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Problem 16QP: More Crosses with Pea Plants: The Principle of Independent Assortment Consider the following cross...
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Monohybrid Problems with Incomplete Dominance
4. Petunia flower color is governed by two alleles, but neither allele is truly dominant over the other.
Petunias with the genotype R'R' are red-flowered, those that are heterozygous (R'R?) are pink, and those
with the R°R? genotype are white. This is an example of incomplete dominance. (Note that superscripts
are used rather than upper- and lowercase letters to describe the alleles.)
a. If a white-flowered plant is crossed with a red-flowered petunia, what is the genotypic ratio of the
F, offspring?.
b. What is the phenotypic ratio of the F, offspring?.
c. If two of the F, offspring are crossed, what phenotypes will appear in the F2 generation?.
d. What will be the genotypic ratio in the F2 generation?.
Transcribed Image Text:Monohybrid Problems with Incomplete Dominance 4. Petunia flower color is governed by two alleles, but neither allele is truly dominant over the other. Petunias with the genotype R'R' are red-flowered, those that are heterozygous (R'R?) are pink, and those with the R°R? genotype are white. This is an example of incomplete dominance. (Note that superscripts are used rather than upper- and lowercase letters to describe the alleles.) a. If a white-flowered plant is crossed with a red-flowered petunia, what is the genotypic ratio of the F, offspring?. b. What is the phenotypic ratio of the F, offspring?. c. If two of the F, offspring are crossed, what phenotypes will appear in the F2 generation?. d. What will be the genotypic ratio in the F2 generation?.
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