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Chapter 11, Problem 16TYU

(a)

Summary Introduction

To determine:

(a) All the possible genotype of mystery pea plant. (b) The cross that can be done to determine the exact genotype.(c) The way in which prediction can be done for the possible genotype and why that method is not called performing a cross. (d) The way in which the result of the cross and the prediction will help in determining the genotype of the mystery plant.

Introduction:

Genotype is the genetic makeup of an organism based on single or multiple traits. It helps in deciphering the type of progeny that would be observed in the future generations. The genotype determines the phenotype of the organism and there can be dominant and recessive genes in the genotype. Dominant genes are those genes that are expressed in the heterozygous state and the recessive genes are those that are not expressed in the heterozygous state.

To determine: All the possible genotype of a mystery pea plant.

(b)

Summary Introduction

To determine:

The cross that can be done to determine the exact genotype.

(c)

Summary Introduction

To determine:

The way in which prediction can be done for the possible genotype and why that method is not called “performing a cross”.

(d)

Summary Introduction

To determine:

The way in which the result of the cross and the prediction will help in determining the genotype of the mystery plant.

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Students have asked these similar questions
A) Describe the data you collect from the Purple 1 x Purple 2 cross. Predict the genotype of each of the parent plants. Explain your predictions using data from the experiment. (Again, you may need to use data from other crosses!) B) Consider the offspring, the next generation (F1), from the Purple 1 x Purple 2 cross. What is the probability of a green stem plant? How do you know this? C) What is the probability in the F2 generation of a green stem offspring? Use a Punnett square(s) and quantitative data to explain your thinking. Upload your Punnett square(s).
Vinca (the periwinkle family) have a height determined by polygenes. The shortest Vinca grow to a full height of only 3 inches, whereas the largest Vinca is 21 inches high at maturity. If one crosses a 3-inch Vinca and a 21-inch Vinca, 12-inch Vinca result. If the F1 are allowed to interbreed, then one gets a range of plants from 3 inches to 21 inches high. However, one only obtains about eight plants in 512 that are 3 inches high and only about eight plants in 512 that are 21 inches high. How many loci are involved in Vinca height?
Vinca (the periwinkle family) have a height determined by polygenes. The shortest Vinca grow to a full height of only 3 inches, whereas the largest Vinca is 21 inches high at maturity. If one crosses a 3-inch Vinca and a 21-inch Vinca, 12-inch Vinca result. If the F1 are allowed to interbreed, then one gets a range of plants from 3 inches to 21 inches high. However, one only obtains about eight plants in 512 that are 3 inches high and only about eight plants in 512 that are 21 inches high. What is the contribution per contributing allele? If two 12-inch (F1) Vincas are crossed, what is the probability of observing a 6-inch Vinca? If a 12-inch F1 plant is crossed to a 21-inch plant, what is the probability of observing a 15-inch plant?
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