LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 9781319145125
Author: Sadava
Publisher: MAC HIGHER
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Chapter 16.2, Problem 3R
Summary Introduction
To review:
The way, in which more than one gene at a time is regulated in eukaryotes.
Introduction:
Gene regulation is mainly controlled by the transcription factors (TFs). These factors attached to the ribonucleic acid (RNA) polymerase on the deoxyribonucleic acid (DNA) sequences and help to initiate or repress the gene transcription. Some of these factors can control multiple genes at a time if there is more than one copy of the binding sites for the transcription factor present on the sequence or on the operon.
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*Example 2: Tracing the path of an autosomal dominant trait
Trait: Neurofibromatosis
Forms of the trait:
The dominant form is neurofibromatosis, caused by the production of an abnormal form of the protein
neurofibromin. Affected individuals show spots of abnormal skin pigmentation and non-cancerous
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cancerous form. i
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allele, and the letter "n" for the normal allele.
Nn
nn
nn
2
nn
Nn
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3
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Chapter 16 Solutions
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