EP HUMAN BIOLOGY-MODIFIED MASTERING
8th Edition
ISBN: 9780134326436
Author: Johnson
Publisher: PEARSON CO
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Chapter 20, Problem 9TY
Summary Introduction
Introduction:
There are two types of cells in the body, somatic cells and germ cells. The gametes (eggs and sperms) are called as the germs cells and rest of the cells are called the somatic cells. The genes in the somatic cells do not get passed on to the progeny.
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Why is it easier to manipulate embryonic stem cells to differentiate into various tissues than it is to manipulate a typical adult cell?
a.
As cells develop, signaling pathways can cause some genes to be turned off during development.
b.
Adult cells have different DNA content than do embryonic stem cells.
c.
Emybronic stem cells pose less of a threat for organ rejection as do an individual s own adult cells.
d.
It is no easier to manipulate emybronic stem cells to differentiate into various tissues than it is to manipulate a typical adult cell.
How can epistasis decrease the number of phenotypes observed in apopulation?a. One gene may mask the expression of another gene.b. One allele may mask the expression of another allele of the samegene.c. Genes may become silenced after exposure to certainenvironmental cues.d. Genes may be inactivated if they are on an X chromosome.
Why are multiple copies of the X chromosome tolerated?
A.
Genes on the X chromosome are not expressed during development.
B.
The extra copies of the X chromosome are inactivated.
C.
There are no genes on the X chromosome that are detrimental when present in multiple copies
D.
The X chromosome only encodes sex related genes
Chapter 20 Solutions
EP HUMAN BIOLOGY-MODIFIED MASTERING
Ch. 20 - Prob. 1QCCh. 20 - GM foods are created for a variety of reasons,...Ch. 20 - Should foods that contain genetically modified...Ch. 20 - Explain how DNA is sequenced.Ch. 20 -
2. Describe the enzymes used in recombinant DNA...Ch. 20 - Prob. 3CRCh. 20 - Discuss the polymerase chain reaction technique,...Ch. 20 - Prob. 5CRCh. 20 - Prob. 6CRCh. 20 - Prob. 7CR
Ch. 20 - Prob. 8CRCh. 20 - Prob. 9CRCh. 20 -
10. List the diseases that gene therapy may be...Ch. 20 - Prob. 1TYCh. 20 - Prob. 2TYCh. 20 - Which of the following is used to separate...Ch. 20 - Genetically engineered human insulin, human growth...Ch. 20 - Prob. 5TYCh. 20 - All of the following statements about transgenic...Ch. 20 -
7. "Gene pharming” refers to:
a. using transgenic...Ch. 20 - Prob. 8TYCh. 20 - Prob. 9TYCh. 20 - Prob. 10TYCh. 20 - Which of the following is needed for sequencing...Ch. 20 - A tiny amount of blood was recovered from a crime...Ch. 20 - Which technique will allow amplification of the...Ch. 20 - A gene for a bacterial protein with insecticide...Ch. 20 - Prob. 15TYCh. 20 -
1. What do you think are the chances that someone...Ch. 20 - Imagine a future in which the respiratory effects...Ch. 20 - Prob. 3AWKCh. 20 - Prob. 4AWKCh. 20 - Prob. 5AWKCh. 20 - There is interest in producing vaccines in foods....Ch. 20 - Transgenic plants have the potential to improve...
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