Biology: The Unity and Diversity of Life (MindTap Course List)
15th Edition
ISBN: 9781337408332
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 10, Problem 7SQ
Summary Introduction
Introduction: A set of regulatory genes that function together to organize the formation of body pattern during the early development is called as homeotic genes. Homeotic proteins either stimulate or suppress the genes, which may lead to the dislocation of the body parts. These genes code for the transcription factor that has a region called homeodomain and are called as Hox genes that are mostly found in vertebrates.
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Homeotic gene expression _______. a. occurs via bacterial operons b. maps out the overall body plan in embryos c. triggers formation of a specific body part
Hox genes encode transcription factors that
a. control segmentation.
b. promote determination.
c. cause cell differentiation.
d. do all of the above.
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.
Chapter 10 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Effect of Paternal Grandmother's Food Supply on...Ch. 10 - Gene expression does not vary by ___ . a. cell...Ch. 10 - Binding or ___ to ___ in DNA can increase the rate...Ch. 10 - Muscle cells differ from bone cells because they...Ch. 10 - Prob. 4SQCh. 10 - Mechanisms that govern gene expression do not...Ch. 10 - Prob. 6SQCh. 10 - Prob. 7SQ
Ch. 10 - Prob. 8SQCh. 10 - Which of the following includes all of the others?...Ch. 10 - Prob. 10SQCh. 10 - Prob. 11SQCh. 10 - A cell with a Barr body is ___ . a. a bacterium b....Ch. 10 - Prob. 13SQCh. 10 - Which of the following statements is incorrect? a....Ch. 10 - Prob. 15SQCh. 10 - Explain why somebut not allof an organism's genes...Ch. 10 - Do the same mechanisms that govern gene expression...Ch. 10 - Prob. 3CTCh. 10 - The photos below show flowers from two Arabidopsis...
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- Gene expression does not vary by ________. a. cell type c. stage of development b. extracellular conditions d. the genetic codearrow_forwardThe photo on the left shows an early frog embryo after three mitotic divisions of a fertilized egg. This embryo has how many cells?arrow_forwardIn mice, the copy of the Igf2 gene that is inherited from the mother isnever expressed in her offspring. This happens because the Igf2 genefrom the mothera. always undergoes a mutation that inactivates its function.b. is deleted during oogenesis.c. is deleted during embryonic development.d. is not transcribed in the somatic cells of the offspring.arrow_forward
- Fill in the blank: _________________ is the phase of development during which cellular divisions result in smaller and smallercells.arrow_forwardWhich of the following statements is incorrect? a. Some gene expression patterns can be passed to an individual's offspring. b. Expression of a master regulator triggers a gene expression cascade. c. X chromosome inactivation is necessary for normal development of male mammals.arrow_forwardMorphogens area. molecules that disrupt normal development.b. molecules that convey positional information and promote changesin development.c. mutagenic agents that cause apoptosis.d. receptors that allow cells to adhere to the extracellular matrix.e. both a and carrow_forward
- Mutations to proto-oncogenes act toa. increase cell division. c. repress oncogenes.b. increase DNA repair. d. decrease cell divisionarrow_forwardWith regard to cancer cells, which of the following statementsare true?A. Cancer cells are clonal, which means they are derived from asingle mutant cell.B. To become cancerous, cells usually accumulate multiplegenetic changes that eventually result in uncontrolledgrowth.C. Most cancers are caused by oncogenic viruses.D. Cancer cells have lost the ability to properly regulate celldivision.arrow_forwardYamanaka’s 2012 Nobel Prize was awarded for hisa. successful cloning of Dolly the sheep.b. demonstration that transcription factors canepigenetically reprogram adult cells.c. invention of somatic cell nuclear transfer technology.d. use of cloning to cure cystic fibrosisarrow_forward
- I posted this question that has two parts. The second part was ignored and deleted! Please answer the second part!! 1st. A bacteriophage lytic development cycle is determined by the expression of its genes. How are these genes temporally subdivided? 2nd. What characteristics differentiate the promoters of these genes in T7 bacteriophage?arrow_forwardStem cells have the potential to become any cell in the body. What changes when they begin to undergo cellular differentiation? -selected genes undergo demethylation -all genes in the cell undergo demethylation selected genes undergo acetylation -all genes in the cell undergo acetylationarrow_forwardWhich of the following includes all of the others? a. homeotic genes b. master regulators c. SRY gene d. PAX6arrow_forward
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