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 2, Problem 1P
Summary Introduction

To determine: The result obtained by cross-pollinating two different F1 plants.

Introduction: GregorMendel is known as the father of genetic because he proposed three laws of inheritance, and based on these laws,he developed pure lines and counted the results and kept the statistical notes. Mendel took seven characteristics of the pea plant and performed various type of crosses, using pea as a model

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When Mendel self crossed the yellow seeded pea plant, he observed that the yellow seeds and green seeds are produced in the ratio of 3:1, whereas when he crossed the yellow seeded plant with green seeded plant, the plant produces yellow and green seeds in the ratio of 1:1. When the plants are cross-pollinated, the F2 results will not be the same because F1 yellow is heterozygous, while green is homozygous genotypes.

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For each of the following statements, indicate whether the statement describes the P generation, F1 generation, or F2 generation.   The plants in the P generationF1 generationF2 generation were allowed to self-pollinate.     The plants in the P generationF1 generationF2 generation are true breeding.     After a cross, there are three times as many tall plants as there are short plants in the P generationF1 generationF2 generation.
You successfully isolate an hsf2/hsf2; hsf3/hsf3 double mutant stock. You cross this plant to an hsf1/hsf1 plant and then self-pollinate the F1. You want to recover at least 10 triple mutant homozygous to evaluate the phenotype. How many plants do you need to genotype to expect to recover 10 triple mutant plants?
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.   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).

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Introduction to Genetic Analysis

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