Chapter 41.3, Problem 1CSC

Summary Introduction

To determine:  The advantages and disadvantages of having a child homozygous for the allele encoding for fast-twitch fibers.

Introduction: The long muscles generally contain the fast-twitch muscle fibers. There is a low requirement of the oxygen in fast-twitch muscle fibers. The mitochondria are fewer in the fast-twitch muscle fibers. The fast-twitch muscle fibers are white in color because there the level of myoglobin is low in these fibers.