Chapter 11.4, Problem 38CQ

a.

Summary Introduction

To explain:

The characteristics of the pedigree rule out inheritance of a trait encoded by a gene in the $\text{mtDNA}$ as the cause of this disorder.

Introduction:

Genes in nuclear content express most of the characters, while some of the characters are associated with genes outside the nucleus of cell. This type of inheritance involving the genes of cytoplasm is known as cytoplasmic inheritance.

b.

Summary Introduction

To explain:

The deletions in $\text{mtDNA}$ by mutation in nuclear gene.

Introduction:

Genes in nuclear content express most of the characters, while some of the characters are associated with genes outside the nucleus of cell. This type of inheritance involving the genes of cytoplasm is known as cytoplasmic inheritance.