Biology
Biology
12th Edition
ISBN: 9780134813448
Author: Audesirk, Teresa, Gerald, Byers, Bruce E.
Publisher: Pearson,
bartleby

Concept explainers

bartleby

Videos

Question
Chapter 11, Problem 1MC
Summary Introduction

Introduction:

An organism’s genotype is the number of different alleles for a particular trait present in it, whereas phenotype is the characteristic of an organism that has appeared because if the type of allele it has. In genome, genes are present on the specific locus.

Expert Solution & Answer
Check Mark

Answer to Problem 1MC

Correct answer:

The physical position of a gene on a chromosome is its locus; slightly different forms of a gene are called alleles. Therefore, option (a) is correct.

Option (a) is given as “locus; alleles”.

Explanation of Solution

Justify reason for the correct statement:

An allele is any of the alternative forms of a gene that may occur at a specific locus and the combination of alleles for a genotype of an organism for expression of a particular phenotype.

Hence, option (a) is correct.

Justify reasons for the incorrect statements:

Option (b) is given as “locus; polygenic”.

The particular location of any gene in the genome is termed as locus and polygenic is an inheritance pattern of a trait that is controlled by the two or more genes. Hence, it is a wrong answer.

Option (c) is given as “chiasma; alleles”.

Alleles are responsible for any particular trait in any organism and chiasma is the site where chromosomes come in contact with each other during crossing over. Hence, it is a wrong answer.

Option (d) is given as “trait and hybrids”.

Traits are the characters carried by any individual, and hybrids contain two alleles for the same trait. Hence, it is a wrong answer.

Hence, options (b), (c), and (d) are incorrect.

Conclusion

Locus provides a physical position to a gene on the chromosome, whereas alleles are the different form of a particular gene.

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
According to the video “The Biology of Skin Color”, why is it that the allele coding for darker skin did not evolve to protect us from skin cancer?   A. Because skin cancer isn't harmful  B. Darker skin did develop to protect us from skin cancer  C. Because skin cancer usually develops after an individual's reproductive years, so it doesn't affect the ability for someone to pass on their genes  D. Because skin cancer usually develops before an individual's reproductive years, so it doesn't affect the ability for someone to pass on their genes
Which term indicates that a single gene has two or more alleles present in a population? A. Point mutation B. Genotype C. Polymorphism D. Pleiotropy
When Gregor Mendel first proposed his theories on genetics, they were not recognized. This was because:    A. Charles Darwin didn't agree with Gregor Mendel's theories.    B. The current theory was that traits from parents blended together in their offspring.    C. Gregor Mendel proposed that individuals could change their physical traits during their lifetime and pass those new traits on to their offspring.    D. Scientists believed there were 5 nucleotide bases, not 4 nucleotide bases.

Chapter 11 Solutions

Biology

Knowledge Booster
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
  • Concepts of Biology
    Biology
    ISBN:9781938168116
    Author:Samantha Fowler, Rebecca Roush, James Wise
    Publisher:OpenStax College
    BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
    Biology
    ISBN:9781305967359
    Author:STARR
    Publisher:CENGAGE L
  • Concepts of Biology
    Biology
    ISBN:9781938168116
    Author:Samantha Fowler, Rebecca Roush, James Wise
    Publisher:OpenStax College
    BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
    Biology
    ISBN:9781305967359
    Author:STARR
    Publisher:CENGAGE L
    Mechanisms of Genetic Change or Evolution; Author: Scientist Cindy;https://www.youtube.com/watch?v=5FE8WvGzS4Q;License: Standard Youtube License