Biology - Study Guide
Biology - Study Guide
8th Edition
ISBN: 9780321501561
Author: Martha R. Taylor
Publisher: PEARSON EDUCATION (COLLEGE)
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Chapter 20, Problem 8IQ

a.

Summary Introduction

To explain: The way in which the data that were obtained from the crime that had occurred.

Introduction:  Short tandem repeats (STRs) are the repeated sequence of one to five nucleotides adjacent to each other in the specific regions of the DNA. These repeats vary highly from one person to another and also the two alleles of the same person may have different STRs. Today, STR is the most widely used genetic marker in forensic science to find out if the suspect is innocent or culprit.

b.

Summary Introduction

To determine: The suspect who is to be charged of the crime from the obtained data.

Introduction:  Polymerase Chain Reaction (PCR) is a technique used to amplify very poor amounts of DNA present in the cell. In this technique, specific primers and polymerase enzymes are added followed by alternate heating and cooling to denature and anneal the DNA fragments. Thus, it plays a vital role in DNA analysis because it produces millions of copies of DNA in a short period of time in a parallel way.

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To ensure a conviction, DNA crime labs use CODIS standards. Instead of 1 tandem repeat, how many would be analyzed?
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