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.
Best Answer: 1. PCR is used to amplify DNA: that is, to (exponentially) increase the number of molecules of a particular DNA region. And because PCR uses primers, it can isolate a particular DNA sequence of interest from among an enormous, complex mix of millions of various DNA sequences: you can proverbially find the DNA needle in a haystack. 2. PCR is important because it allows scientists to work with DNAs and DNA samples that they previously could not.