Question

In addition to codominance, the ABO blood group antigens are also an example of a. incomplete dominance b. X-linked recessive inheritance c. multiple alleles d. recessive lethal inheritance

Name: Problem 29, Chapter 28: Anatomy & Physiology
Uploaded: 2020-07-14T16:42:18-08:00
Duration: 1 min 37 s
Channel: Jessica Wooten
Description: In addition to codominance, the ABO blood group antigens are also an example of a. incomplete dominance b. X-linked recessive inheritance c. multiple alleles d. recessive lethal inheritance

   In addition to codominance, the ABO blood group antigens are also an example of
a. incomplete dominance
b. X-linked recessive inheritance
c. multiple alleles
d. recessive lethal inheritance

Anatomy & Physiology

J. Gordon Betts,… 1st Edition

Chapter 28, Problem 29

Instant Answer

Solved by Expert Jessica Wooten

07/14/2020

Step 1

The A and B alleles are co-dominant, meaning that they both express themselves fully in a heterozygous individual. The O allele is recessive to both A and B. Show more…

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In addition to codominance, the ABO blood group antigens are also an example of a. incomplete dominance b. X-linked recessive inheritance c. multiple alleles d. recessive lethal inheritance

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Key Concepts

Codominance

Codominance is a genetic principle where both alleles in a heterozygous organism are fully expressed, each contributing to the phenotype. For example, in the ABO blood system, both A and B alleles are expressed when present together, resulting in the AB blood type.

Multiple Alleles

Multiple alleles refer to the existence of more than two allele forms of a gene within a population. In the context of ABO blood groups, more than two allele variants (A, B, O) interact to determine an individual's blood type, illustrating how multiple alleles contribute to genetic diversity.

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