Genetics: From Genes to Genomes, 5th edition
5th Edition
ISBN: 9780073525310
Author: Leland H. Hartwell, Michael L. Goldberg, Janice A. Fischer, Leroy Hood, Charles F. Aquadro
Publisher: McGraw-Hill Education
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Chapter 19, Problem 21P
Summary Introduction
To determine:
The evidence that is found in the whole-genome sequence data for the existence and location of the eight genetic alterations on the list.
Introduction:
Thousand of the genes can be expressed at the same time, and this is possible by a technique known as a microarray. Microarray is the slides which contain thousands of spots in particular positions. Each spot is loaded with DNA sequence during the experiment.
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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?
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?
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?
Chapter 19 Solutions
Genetics: From Genes to Genomes, 5th edition
Ch. 19 - For each of the terms in the left column, choose...Ch. 19 - Characterize the differences between tumor cells...Ch. 19 - Prob. 3PCh. 19 - Prob. 4PCh. 19 - A carcinogenic compound is placed on the skin of...Ch. 19 - Prob. 6PCh. 19 - Prob. 7PCh. 19 - Molecules outside and inside the cell regulate the...Ch. 19 - Put the following steps in the correct ordered...Ch. 19 - a. Would you expect a cell to continue or to stop...
Ch. 19 - Prob. 11PCh. 19 - One of the hallmarks of mitotic anaphase is the...Ch. 19 - Concerning the Tools of Genetics Box Analysis of...Ch. 19 - Are genome and karyotype instabilities...Ch. 19 - Prob. 15PCh. 19 - A female patient 19 years old, whose symptoms are...Ch. 19 - Prob. 17PCh. 19 - Prob. 18PCh. 19 - Neurofibromatosis type 1 NF1; also known as von...Ch. 19 - Hepatocellular carcinoma is the most frequent form...Ch. 19 - Prob. 21PCh. 19 - Prob. 22PCh. 19 - Prob. 23P
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