EBK GENETICS: FROM GENES TO GENOMES
EBK GENETICS: FROM GENES TO GENOMES
6th Edition
ISBN: 9781260041255
Author: HARTWELL
Publisher: MCGRAW HILL BOOK COMPANY
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Chapter 20, Problem 26P

Suppose that instead of microarrays, you analyzed the normal and cancerous tissue from the patient described in Problem 25 by whole-genome sequencing. What evidence would you find in the whole-genome sequence data for the existence and location of the eight genetic alterations on the list?

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When doing the virtual DNA microarray analysis, which color (red, green or yellow) would the spot be if that gene was inappropriately inactivated in the cancer cell? When doing the virtual DNA microarray analysis, which color (red, green or yellow) indicated that the cancer cell had an activated a gene that is not normally as active in the non-cancerous version of the cell?
From your knowledge about DNA microarray, answer the following: A- How DNA microarray is created? and why it is referred to as “hybridization technology”?      B- Why RT-PCR is important in the sample preparation to perform expression microarray experiment?     C- Mention the name and the color of the dyes used in expression microarray?      D- If the expression microarray experiment was done with a normal sample and a suspected sample, after reading the color pattern resulted from the experiment it was recorded that “gene A22” is expressed in the suspected sample. The gene A22 is clinically linked to colon cancer. Answer the following: What is the expected color of the spot on the microarray which represents this gene? What is your interpretation of the suspected sample; is it a cancer sample or not and explain why?
It has been suggested that it would make the study of human diseases easier if cloned transgenic animals were produced that carried faulty versions of human genes (e.g., the gene that causes cystic fibrosis). a. Why would such animals be useful in medical research? : b. What ethical questions are raised by the creation of such transgenic animals?

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EBK GENETICS: FROM GENES TO GENOMES

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