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In garden peas, tall plants are dominant to short plants and smooth seeds are dominant over wrinkled seeds. If two heterozygous tall plants with smooth seeds (TtRr) are crossed, what are the potential genotypes and phenotypes that can be expected in the offspring? What is the genotype of the parents? What are the gametes for each parent? What is the phenotypic ratio? What proportion of the Tall plants with smooth seeds is heterozygous for both traits?

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Keith Leannon
Keith LeannonLv2
17 Dec 2019
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Related questions

Mendel found that, in his pea plants, Yellow seeds (Y) were dominant to green seeds (y) and Smooth seeds (S) were dominant to wrinkled (s). Considering this, and using the following phenotypic data of parents and offspring, determine the genotype for each of the parents in each example cross shown be sure to clearly distinguish between the upper case = Dominant allele and lower case = recessive allele in your answers hint: the best way to do this is first determine the possible genotypes for the parents, given their phenotypes, and then examine the phenotypic ratios of the offspring to choose the correct parent genotypes.

a. Parents: Yellow, wrinkled x Yellow, Smooth Offspring: 3/8 Yellow, Smooth 3/8 Yellow, wrinkled 1/8 green, Smooth 1/8 green, wrinkled

b. Parents: green, Smooth x Yellow, wrinkled Offspring: 1/2 green, Smooth 1/2 Yellow, Smooth

Mendel found that, in his pea plants, Yellow seeds (Y) were dominant to green seeds (y) and Smooth seeds (S) were dominant to wrinkled (s). Considering this, and using the following phenotypic data of parents and offspring, determine the genotype for each of the parents in each example cross shown be sure to clearly distinguish between the upper case = Dominant allele and lower case = recessive allele in your answers hint: the best way to do this is first determine the possible genotypes for the parents, given their phenotypes, and then examine the phenotypic ratios of the offspring to choose the correct parent genotypes.

a. Parents: Yellow, wrinkled x Yellow, Smooth Offspring: 3/8 Yellow, Smooth 3/8 Yellow, wrinkled 1/8 green, Smooth 1/8 green, wrinkled

In peas, the dominant seed shape is round and the recessive iswrinkled(w). The dominant trait for pod color is green andrecessive is yellow (y). A plant with round seeds and green podsthat i heterozygous only for the color trait is crossed with aplant that has wrinkled seeds and yellow pods, and the resulting F1progeny are selfed(self fertilized).
Write out the P1 genotpes and the F1 and F2 genotypic andphenotypic ratios.

What proportion of the plants with green pods and round seeds fromthe F2 generation would you expect to be true breeding(i.e. produceonly plants with green pods and round seeds)?

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