Campbell Biology (10th Edition)
Campbell Biology (10th Edition)
10th Edition
ISBN: 9780321775658
Author: Jane B. Reece, Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Robert B. Jackson
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
asap please.
Explain with answer.
traffic deaths in 10 years. Does daylight savings time increase the number of traffic deaths? (Many countries are in the process of getting rid of the time change - even though the Senate did vote to stop the time change the legislation seems to have stalled (as usual!)). 6) Epistasis is a phenomenon in which one gene controls the expression of another. In one case, a dihybrid cross should yield a 9:3:4 ratio. You collect the following data on mice: black coat: 218 Is there any reason to doubt the ratio of 9 black: 3 brown : 4 white? brown coat: 76 white coat: 89
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
Mitochondrial mutations; Author: Useful Genetics;https://www.youtube.com/watch?v=GvgXe-3RJeU;License: CC-BY