BiologyWise
Biology Wise: Germline Mutation vs. Somatic Mutation
Provides a comparison of germline and somatic mutations based on cause, heredity, how they are inherited, the effects they have, when they occur, the extent of the occurrence, and how they are detected. Describes examples of both types...
Kansas State
Mutations, Mutagens and Dna Repair: Types of Mutations
Good explanation of the different types of mutations. Solid background on base-pair substitution.