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Two hypothetical human conditions have been found to have a genetic basis. Suppose that a hypothetical genetic disorder responsible for condition 1 is similar to Marfan syndrome. The defect responsible for condition 2 resembles Edwards syndrome. One of the two conditions results in more severe defects, and death occurs in infancy. The other condition produces a mild phenotypic abnormality and is not lethal. Which condition is most likely lethal, and why?

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Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052

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BuyFindarrow_forward

Human Heredity: Principles and Iss...

11th Edition
Michael Cummings
Publisher: Cengage Learning
ISBN: 9781305251052
Chapter 6, Problem 17QP
Textbook Problem
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Two hypothetical human conditions have been found to have a genetic basis. Suppose that a hypothetical genetic disorder responsible for condition 1 is similar to Marfan syndrome. The defect responsible for condition 2 resembles Edwards syndrome. One of the two conditions results in more severe defects, and death occurs in infancy. The other condition produces a mild phenotypic abnormality and is not lethal. Which condition is most likely lethal, and why?

Summary Introduction

To describe: The lethality of hypothetical genetic disorder that is responsible for condition 1 and is similar to the Marfan syndrome, and the defect, which is responsible for condition 2 that resembles to the Edwards’s syndrome.

Introduction: The lethality of any syndrome is greatly dependent on the symptoms and effects of that syndrome over the organism. Genetic abnormalities are very much lethal to an organism. The genes regulate the cells of an organism via expressing proteins; so, any malfunctioning in the gene may result in the physical change of an individual.

Explanation of Solution

Edward and Marfan syndromes are genetic abnormalities. The edward syndrome occurs due to the trisomy of 18 chromosomes, while the Marfan syndrome is an inherited condition.

In Edward syndrome, there are lots of abnormalities which are associated with brain, heart, craniofacial structures, kidneys, and stomach. The majority of people born with this syndrome are fragile and weak. The survival rate is very much low or nearly 0...

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