Chapter 3.2, Problem 18AQP

a.

Summary Introduction

To determine:

The most likely genotypes for the parents of each litter.

Introduction:

The ABO blood group is determined by three alleles of gene I: $I^A$,$I^B$ and i. The surface of red blood cells have specific surface antigens, either ‘A’ or ‘B’, which are encoded by gene I. The recessive allele i does not produce any surface antigen which forms blood group O (genotype ii). If gene I encode molecule A only, the person will have blood group A (genotype $I^{A}i$ or $I^A{I}^A$). If it encodes only molecule B, the person will have B blood group (genotype $I^B{I}^B$ or $I^{B}i$).

If gene I encode for both molecule A and B, it give rise to blood group type AB (genotype $I^A{I}^B$). Here both $I^A$ and $I^B$ alleles are equally or co-dominantly expressed to give rise to a new phenotype. The person with genotype $I^A{I}^B$ will have both A and B molecules on red blood cell surface.

b.

Summary Introduction

To determine:

The most likely genotypes for the parents of each litter.

Introduction:

The ABO blood group is determined by three alleles of gene I: $I^A$,$I^B$ and i. The surface of red blood cells have specific surface antigens, either ‘A’ or ‘B’, which are encoded by gene I. The recessive allele i does not produce any surface antigen which forms blood group O (genotype ii). If gene I encode molecule A only, the person will have blood group A (genotype $I^{A}i$ or $I^A{I}^A$). If it encodes only molecule B, the person will have B blood group (genotype $I^B{I}^B$ or $I^{B}i$).

If gene I encode for both molecule A and B, it give rise to blood group type AB (genotype $I^A{I}^B$). Here both $I^A$ and $I^B$ alleles are equally or co-dominantly expressed to give rise to a new phenotype. The person with genotype $I^A{I}^B$ will have both A and B molecules on red blood cell surface.

c.

Summary Introduction

To determine:

The most likely genotypes for the parents of each litter.

Introduction:

The ABO blood group is determined by three alleles of gene I: $I^A$,$I^B$ and i. The surface of red blood cells have specific surface antigens, either ‘A’ or ‘B’, which are encoded by gene I. The recessive allele i does not produce any surface antigen which forms blood group O (genotype ii). If gene I encode molecule A only, the person will have blood group A (genotype $I^{A}i$ or $I^A{I}^A$). If it encodes only molecule B, the person will have B blood group (genotype $I^B{I}^B$ or $I^{B}i$).

If gene I encode for both molecule A and B, it give rise to blood group type AB (genotype $I^A{I}^B$). Here both $I^A$ and $I^B$ alleles are equally or co-dominantly expressed to give rise to a new phenotype. The person with genotype $I^A{I}^B$ will have both A and B molecules on red blood cell surface.

d.

Summary Introduction

To determine:

The most likely genotypes for the parents of each litter.

Introduction:

The ABO blood group is determined by three alleles of gene I: $I^A$,$I^B$ and i. The surface of red blood cells have specific surface antigens, either ‘A’ or ‘B’, which are encoded by gene I. The recessive allele i does not produce any surface antigen which forms blood group O (genotype ii). If gene I encode molecule A only, the person will have blood group A (genotype $I^{A}i$ or $I^A{I}^A$). If it encodes only molecule B, the person will have B blood group (genotype $I^B{I}^B$ or $I^{B}i$).

If gene I encode for both molecule A and B, it give rise to blood group type AB (genotype $I^A{I}^B$). Here both $I^A$ and $I^B$ alleles are equally or co-dominantly expressed to give rise to a new phenotype. The person with genotype $I^A{I}^B$ will have both A and B molecules on red blood cell surface.

e.

Summary Introduction

To determine:

The most likely genotypes for the parents of each litter.

Introduction:

The ABO blood group is determined by three alleles of gene I: $I^A$,$I^B$ and i. The surface of red blood cells have specific surface antigens, either ‘A’ or ‘B’, which are encoded by gene I. The recessive allele i does not produce any surface antigen which forms blood group O (genotype ii). If gene I encode molecule A only, the person will have blood group A (genotype $I^{A}i$ or $I^A{I}^A$). If it encodes only molecule B, the person will have B blood group (genotype $I^B{I}^B$ or $I^{B}i$).

If gene I encode for both molecule A and B, it give rise to blood group type AB (genotype $I^A{I}^B$). Here both $I^A$ and $I^B$ alleles are equally or co-dominantly expressed to give rise to a new phenotype. The person with genotype $I^A{I}^B$ will have both A and B molecules on red blood cell surface.

f.

Summary Introduction

To determine:

The most likely genotypes for the parents of each litter.