Biology
11th Edition
ISBN: 9781259188138
Author: Peter H Raven, George B Johnson Professor, Kenneth A. Mason Dr. Ph.D., Jonathan Losos Dr., Susan Singer
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 19, Problem 7U
The process of nuclear reprogramming
a. is a normal part of pattern formation.
b. reverses the changes that occur during differentiation.
c. requires the introduction of new DNA.
d. is not possible with mammalian cells.
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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.
The term differentiation refers to (a) the loss of genes from cells. (b) the acquisition of new functional capabilities by cells. (c) the production of functionally specialized cells. (d) the division of genes among different types of cells.
A. In order to create an embryo from a somatic cell, the donor egg cell must have its ________________________ removed.
B. Why is cloning extinct animals problematic?
Chapter 19 Solutions
Biology
Ch. 19 - During development, cells become a. differentiated...Ch. 19 - Prob. 2UCh. 19 - Prob. 3UCh. 19 - Prob. 4UCh. 19 - Plant meristems a. are only present during...Ch. 19 - Prob. 6UCh. 19 - The process of nuclear reprogramming a. is a...Ch. 19 - What is the common theme in cell determination by...Ch. 19 - The process of reproductive cloning a. shows that...Ch. 19 - Prob. 3A
Ch. 19 - Prob. 4ACh. 19 - The genes that encode the morphogen gradients in...Ch. 19 - What would be the likely result of a mutation of...Ch. 19 - MADS-box, and Hox genes are a. found only in...Ch. 19 - The fate map for C. elegans (refer to figure 19.3)...Ch. 19 - Prob. 2SCh. 19 - You have generated a set of mutant embryonic mouse...Ch. 19 - Assume you have the factors in hand necessary to...
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- _________ is an example of reproductive cloning. a. Somatic cell nuclear transfer SCNT b. Multiple offspring from the same pregnancy c. Artificial embryo splitting d. a and carrow_forwardHomeobox genes (a) are found in fruit flies but no other animals (b) tend to be expressed in the order that they appear on a chromosome (c) contain a characteristic DNA sequence (d) b and c (e) a, b, and carrow_forwardWhich of the following statements correctly describes a characteristic of tumor-suppressor gene? a) they are frequently overexpressed in cancerous cells. b) they are cancer-causing genes introduced into cells by viruses. c) they encode proteins that help prevent uncontrolled cell growth. d) they often encode proteins that stimulate the cell cycle.arrow_forward
- What may be expected to happen chromosomally and genetically to: a. an unfertilized egg that undergoes mitosis, but fails to undergo cytokinesis b. a cell which formed a tripolar spindle c. a chromosome that lost its centromere d. a chromosomes that contains two centromeres.arrow_forward________is an example of reproductive cloning. a. Somatic cell nuclear transfer (SCNT) b. Multiple offspring from the same pregnancy c. Artificial embryo splitting d. In vitro fertilizationarrow_forwardPart A and B A. What is the normal function of the Rb protein? A) Rb prevents the cell cycle from proceeding unless the cell is prepared to do so B) Rb causes cells to undergo apoptosis C) Rb promotes Cdk activation D) Each of the other selections is true E) Rb repairs damaged DNA B. How do tumors arise? A) When cell proliferation occurs at a higher rate than cell death B) When someone is infected with a tumor from another person C) When cell death occurs at a very high rate D) When cell proliferation occurs at a very low ratearrow_forward
- The nucleus of udder cell which was used to develop Dolly was taken from_______.a) Six year old Finn Dorset white sheep b) Seven year old white sheep. c) Six year old goat d) Five year old cowarrow_forwardThe fused cell is cultured and is implanted as a multi-celled embryo. During the step where the fused cell begins dividing normally, the cells of the future clone undergo a. fertilization b. gene splicing c. meiosis d. mitosisarrow_forwardWhat is differentiation? A. When a cell switches from its original purpose B. The process of multiplying the cells in the body C. The process by which cells become specialized in their form to aid in their function D. How cells grow once their place in the body has been decidedarrow_forward
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