EBK BIOLOGY
EBK BIOLOGY
6th Edition
ISBN: 9780134819075
Author: Maier
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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Chapter 9, Problem 10LTB
Summary Introduction

Introduction:

The method by which the DNA of a person is studied is called DNA profiling. This method is used for paternity testing to detect the biological parents of a child. The DNA profiling is also used for criminal investigations to detect the culprits.

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An important application of DNA fingerprinting is relationship testing. Persons who are related genetically have some bands or peaks in common. The number they share depends on the closeness of their genetic relationship. For example, an offspring is expected to receive half of his or her minisatellites from one parent and the rest from the other. The diagram shown here schematically illustrates traditional DNA fingerprints of an offspring, mother, and two potential fathers. In paternity testing, the offspringā€™s DNA fingerprint is first compared with that of the mother. The bands that the offspring have in common with the mother are depicted in purple. The bands that are not similar between the offspring and the mother must have been inherited from the father. These bands are depicted in red. Which male could be the father?
Which of the following individuals would you expect to share 25% of their DNA with you?Ā Select all correct answers. Your aunt or uncle Your child Your first cousin Your grandparent Your parent Your sibling
Three men are suspected of being the father of a child. Results of DNA fingerprinting tests of the mother, the child and all 3 men are shown below. Based on these results, who is the father of the child. Explain how you know. Mother Child Male 1 Male 2 Male 3 DNA fragment size 500- - 400- 300- 200- || |||||| ||| | || | ||
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