Chapter 19.2, Problem 3CC

Summary Introduction

To determine:

How many amino acid differences occur between the following pairs:

rhesus and green monkeys,

Congo puffer fish and European flounder,

rhesus monkey and

Congo puffer fish

Also, analyze the evolutionary relationship among these 4 species.

Introduction:

Evolutionary relationships can be understood on the basis of the gene sequences. Since the replication machinery in biological organisms is very efficient and accurate, there is very less chance of change in the gene sequences. But during the course of evolution, these sequences may develop parity with each other and give rise to different organisms that are somehow closely related to each other as some genes remain conserved.