Chapter 5, Problem 19E

Summary Introduction

To draw: A phylogenetic tree for the family of homologous proteins whose partial sequences are given.

Given:

Protein A:T   L   A   D   K   A   I   S   L   H   D   S

Protein B:T   L   G   D   K   A   V   S   I   H   E   S

Protein C:T   L   A   D   K   A   I   S   V   H   D   S

Concept introduction: Phylogenetic tree is the diagram that shows the evolutionary relationships between the organisms derived from the common ancestral form. The directed tree with common ancestor is called rooted phylogenetic tree. Unrooted trees are trees with leaf nodes without an ancestor.