Biology: Science for Life with Physiology (5th Edition)
Biology: Science for Life with Physiology (5th Edition)
5th Edition
ISBN: 9780321922212
Author: Colleen Belk, Virginia Borden Maier
Publisher: PEARSON
bartleby

Concept explainers

bartleby

Videos

Textbook Question
Book Icon
Chapter 8, Problem 1LTB

Compare and contrast the terms codominance and incomplete dominance.

Expert Solution & Answer
Check Mark
Summary Introduction

To write:

The comparison characters between incomplete dominance and co-dominance.

Introduction:

The allele is the form of a single gene present in an organism. The different combination of the alleles determines the genotype and phenotype of the organism. The allele can be of two types dominant or recessive. The dominant allele has a property to mask the effect of the recessive allele in heterozygote condition.

Explanation of Solution

The incomplete dominance is a condition, in which an allele is not able to masks the effect of the recessive allele and the co dominance is a condition, in which 2 alleles are equally dominant resulting in expression of both traits.

The comparison between incomplete dominance and co dominance is given below:

    Incomplete dominanceCo dominance.
    Incomplete dominance is a heterozygous condition in which neither allele in pair shows complete dominance over the other. Neither of the allele in the pair is dominant and rather combines to display an intermediate trait by mixing of the two traits. For Example:

    This can be observed in the flower color of the snapdragon plants.

    The color of the flower is determined by two types of alleles: R and r.

    R is the dominant allele and codes for red flowers. The r is the recessive allele and codes for the white flowers.

    Co dominance is a condition, in which two alleles are equally dominant. In this condition, the resultant phenotype is the cumulative expression of both the alleles.

    For Example:

    This can be observed in the ABO blood grouping of the humans.

    There are three allele, which exist in humans and determine the blood group, these are Ia, I b and i. The allele Ia, I b are dominant and code for A and B phenotype respectively and the allele i code for blood group O and it is recessive.

    In the presence of Ia, Ib, the resulatant phenotype is AB.

Conclusion

The incomplete dominance is a condition, in which an allele is not able to masks the effect of the recessive allele and the co dominance is a condition, in which 2 alleles are equally dominant resulting in expression of both traits.

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
Compare and contrast incomplete dominance with codominance
Contrast incomplete dominance and codominance
Describe the diference between incomplete dominance and codominance.
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.
Recommended textbooks for you
Text book image
Concepts of Biology
Biology
ISBN:9781938168116
Author:Samantha Fowler, Rebecca Roush, James Wise
Publisher:OpenStax College
Text book image
BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)
Biology
ISBN:9781305967359
Author:STARR
Publisher:CENGAGE L
The Psychology of Violent Behaviour; Author: Simon Fraser University;https://www.youtube.com/watch?v=iTdqo_7_qLE;License: Standard Youtube License