CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
CAMPBELL BIOLOGY MOD MASTERING (18 WEEK)
12th Edition
ISBN: 9780136920335
Author: Urry
Publisher: PEARSON
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 23, Problem 23.1CR

Typically. most of the nucleotide variabillity thar occurs within a genetic locus does not affect the phenotype. Explain why.

Expert Solution & Answer
Check Mark
Summary Introduction

To explain: Why most of the nucleotide variability within a genetic locus does not affect the phenotype.

Introduction: Variation at a genetic locus can be defined as any change in the nucleotide sequence of the DNA caused due to mutations occurred in that locus of the gene. However, most of the nucleotide variability does not affect the phenotype because mutations that occur in the non-coding region do not alter/change the amino acid sequence, which codes for the proteins

Explanation of Solution

Higher organisms have a large gene pool that contains non-coded DNA known as introns. As most of the nucleotide variability due to mutations occurs in the intron region, it does not cause a change in amino acid and do not code for a protein, which leads to the neutral effect in the population. Only the nucleotide variations in the coding region have a significant impact if the change in DNA sequence leads to a change in the amino acid sequence to alter the proteins structure and function. Although most variable regions within exons reflect changes in the DNA sequence and most of them do not change the sequence of amino acids encoded by a gene, they do not affect the phenotype.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
Ch.23 How is Salmonella able to cross from the intestines into the blood? A. it is so small that it can squeeze between intestinal cells B. it secretes a toxin that induces its uptake into intestinal epithelial cells C. it secretes enzymes that create perforations in the intestine D. it can get into the blood only if the bacteria are deposited directly there, that is, through a puncture — Which virus is associated with liver cancer? A. hepatitis A B. hepatitis B C. hepatitis C D. both hepatitis B and C — explain your answer thoroughly
Ch.21 What causes patients infected with the yellow fever virus to turn yellow (jaundice)? A. low blood pressure and anemia B. excess leukocytes C. alteration of skin pigments D. liver damage in final stage of disease — What is the advantage for malarial parasites to grow and replicate in red blood cells? A. able to spread quickly B. able to avoid immune detection C. low oxygen environment for growth D. cooler area of the body for growth — Which microbe does not live part of its lifecycle outside humans? A. Toxoplasma gondii B. Cytomegalovirus C. Francisella tularensis D. Plasmodium falciparum — explain your answer thoroughly
Ch.22 Streptococcus pneumoniae has a capsule to protect it from killing by alveolar macrophages, which kill bacteria by… A. cytokines B. antibodies C. complement D. phagocytosis — What fact about the influenza virus allows the dramatic antigenic shift that generates novel strains? A. very large size B. enveloped C. segmented genome D. over 100 genes — explain your answer thoroughly
Knowledge Booster
Background pattern image
Biology
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
Text book image
Human Heredity: Principles and Issues (MindTap Co...
Biology
ISBN:9781305251052
Author:Michael Cummings
Publisher:Cengage Learning
Text book image
Biochemistry
Biochemistry
ISBN:9781305577206
Author:Reginald H. Garrett, Charles M. Grisham
Publisher:Cengage Learning
Text book image
Essentials Of Human Development
Biology
ISBN:9781285647357
Author:Kail
Publisher:Cengage
Text book image
Nutrition Now
Health & Nutrition
ISBN:9781337415408
Author:Brown
Publisher:Cengage
Text book image
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY