) Why is it possible for you to study the eye colour gene by extracting cheek cells?   a. Because the nucleus of every cell in the human body contains the same genetic information. b. Because the cheek cells are located near the cells of the eye and so they are able to exchange DNA.   c. Because all genes in the human body are expressed at all times so it is easy to study them. d. All of the above are possible explanations. 1b) What is the purpose of heating the sample to 75°C following addition of the 0.2M NaOH solution?   a. To denature the histone proteins that are keeping the DNA tightly coiled. b. To ensure that all the DNA is removed from the swab in preparation for PCR.   c. To breakdown the cheek cell membrane to release the DNA from the cell.  d. It breaks down the circular DNA

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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1a) Why is it possible for you to study the eye colour gene by extracting cheek cells?

 

a. Because the nucleus of every cell in the human body contains the same genetic information.

b. Because the cheek cells are located near the cells of the eye and so they are able to exchange DNA.

 

c. Because all genes in the human body are expressed at all times so it is easy to study them.

d. All of the above are possible explanations.

1b) What is the purpose of heating the sample to 75°C following addition of the 0.2M NaOH solution?

 

a. To denature the histone proteins that are keeping the DNA tightly coiled.

b. To ensure that all the DNA is removed from the swab in preparation for PCR.

 

c. To breakdown the cheek cell membrane to release the DNA from the cell. 

d. It breaks down the circular DNA down into linear fragments so that they will be easier to visualize.i

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