Table of Contents. I. Brief Chronology of the Life of Frederick Douglass 1. II. Frederick Douglass: A Biography, by Steven Mintz 3. III. Excerpts from Narrative of the Life of Frederick Douglass, an. American Slave, Written by Himself , and Suggested Discussion.
Since DNA contains genetic code, much of it is studied and analyzed for a variety of reasons. Generally, DNA testing may be used in identification or classification of family trees and it may also be used in various sciences for study in diseases and crimes. In cases where a particular child has no identified father, DNA testing is a big help in tracing the real person who fathered the said child.
The Polymerase Chain Reaction (PCR) is an important tool for many applications. For example, it can be used to amplify a sample of DNA when there isnât enough to analyze (e.g. a sample of DNA from a crime scene, archeological samples), as a method of identifying a gene of interest, or to test for disease.rimers complementary to particular regions of the DNA of interest are added to a sample along with the enzyme DNA polymerase. A complementary strand of DNA is built using the primer as the initial building block.