Introduction to Genetic Analysis
Introduction to Genetic Analysis
11th Edition
ISBN: 9781464109485
Author: Anthony J.F. Griffiths, Susan R. Wessler, Sean B. Carroll, John Doebley
Publisher: W. H. Freeman
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Chapter 1, Problem 11P

a.

Summary Introduction

To determine: The length of the first and second hybrid stems under blending theory.

Introduction: Mendel was known as the father of genetics. Mendel worked on the garden pea and consider it’s seven characteristics, such as flower color, seed color, height, and seed shape. Mendel took two variants of height long and short in which he observed that the dominant character always concealed the other form.

b.

Summary Introduction

To determine: The observation in second-generation hybrids if all the first-generation hybrids are tall.

Introduction: Mendel, while experimenting on the garden pea, gave three basic laws of inheritance. The laws are the law of segregation, the law of dominance, and the law of independent assortment. The alleles that are identical to each other are known as homozygous, while two different alleles are known as heterozygous.

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Mendel obtained his initial pea plant varieties from local breeders who were developing new varieties that might be useful or interesting. To generate these new varieties, breeders formed hybrids between existing varieties of different phenotypic characteristics by cross pollination, using techniques they doubtless taught to Mendel.  After producing a hybrid, they allowed several generations of self-pollination, as happens naturally if the flowers are not disturbed. a. How many generations would it take for a breeder to have produced new pure-breeding varieties using this approach?     i. First, consider just one heterozygous gene in the F1 hybrid. What is the probability that an individual of the F2 generation would be heterozygous for that gene?    ii. What is the probability that an individual in the F3 generation would be heterozygous for this gene?   iii. What is the probability that an individual in the F10 generation would be heterozygous for this gene?   iv. What is the…
Mendel obtained his initial pea plant varieties from local breeders who were developing new varieties that might be useful or interesting. To generate these new varieties, breeders formed hybrids between existing varieties of different phenotypic characteristics by cross-pollination, using techniques they doubtless taught to Mendel.  After producing a hybrid, they allowed several generations of self-pollination, as happens naturally if the flowers are not disturbed.  i. How many generations would it take for a breeder to have produced new pure-breeding varieties using this approach?  ii. What is the probability that an individual in each of these generations (F2, F3, and F10) would be homozygous for one or the other allele of this gene? [Broad hint: if they’re not heterozygous, they’re homozygous!]   please answer and explain properly
In Mendel's genetic experiments many characteristics of the plants were quantified, such as their height (tall or short), flower position (axial or terminal), and seed color (colored or white). Suppose 100 plants are measured, and 37 are tall with axial flowers and colored seeds. Further, suppose a total of 26 plants have white seeds, 4 of them being short and 7 having terminal flowers. There are no short plants with terminal flowers, and the total number of short plants is 12. What is the probability a randomly selected plant will have flowers in the terminal position? Round your answer to THREE DECIMAL places. Also, double check your answer before posting. thank you
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