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 3, Problem 32P
Summary Introduction

To describe: A genetic explanation for the inheritance pattern of a sickly yellowish trait.

Introduction: According to Mendel's first law of dominance, each gene has two alleles that code for a specific trait. Among these two alleles, one is always dominant, which means that it will always show, while the other allele is recessive meaning its presence can be masked by the dominant allele.

Summary Introduction

To suggest: A simple test for the inheritance pattern of a sickly yellowish trait.

Introduction: The cross between individuals possessing two pairs of contrasting traits (four alleles) is known as a dihybrid cross. It involves a cross between two true-breeding or pure parents.

Summary Introduction

To explain: The relationship between chloroplasts and the reduced photosynthesis, sickliness, and yellowish appearance of a plant.

Introduction: The plant organelle chloroplast allows the plant to perform photosynthesis or to make its own food or energy.

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In a natural population of annual plants, a single plant isfound that is sickly looking and has yellowish leaves. Theplant is dug up and brought back to the laboratory.Photosynthesis rates are found to be very low. Pollenfrom a normal dark-green-leaved plant is used to fertilizeemasculated flowers of the yellowish plant. A hundredseeds result, of which only 60 germinate. All the resultingplants are sickly yellow in appearance.a. Propose a genetic explanation for the inheritancepattern.b. Suggest a simple test for your model.c. Account for the reduced photosynthesis, sickliness,and yellowish appearance
A Heterozygous plant, GgHhliJjKk is allowed to self-fertilize. What is the probability that an offspring will be GgHHliJjKk?
Trace the offspring of orchid flower up to second generation. Given: P-violet У - yellow Parent: PPX yy G- F1- P- G - F2- 1. A BI 三 三三 III !!
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