chap 17, 50 development

chap 17, 50 development - Name: _ Class: _ Date: _ ID: A...

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Name: ________________________ Class: ___________________ Date: __________ ID: A 1 chap 17, 50 Development Multiple Choice Identify the choice that best completes the statement or answers the question. ____ 1. Scientists are able to determine the location of cells expressing a certain gene in an embryo by: a. the polymerase chain reaction. b. blastoderm fate mapping. c. gene mapping. d. immunofluorescence. e. multiple Southern blots. ____ 2. Cells become progressively committed to specific patterns of gene activity and developmental fate through a process known as: a. morphogenesis. b. determination. c. cell differentiation. d. nonspecific differentiation. e. growth. ____ 3. Cells becoming progressively more specialized in their structure and gene activity is known as: a. morphogenesis. b. determination. c. differentiation. d. maturation. e. growth. ____ 4. Cells become progressively organized into recognizable structures through a process known as: a. morphogenesis. b. determination. c. cell differentiation. d. nonspecific differentiation. e. growth. ____ 5. The concept of nuclear equivalence states that: a. all of the somatic cells in an adult organism have the same genes. b. the genes of the individuals of the same species are exactly the same. c. as cells mature, unneeded genes are lost. d. the nuclei of all organisms are the same. e. nuclei of individuals of the same species are the same size. ____ 6. Differential gene expression is defined as: a. the ability of some cells to arrest their development under different environmental conditions. b. the progressive fixation of the fates of a cell's descendants. c. the differences in the types of genes found in various somatic cells. d. regulation during development that varies the type and quantity of gene products among cells. e. the ability of some cells to constitutively express all their genes all the time.
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Name: ________________________ ID: A 2 ____ 7. The significance of totipotency is that: a. genes are not regularly lost during development. b. most organisms can be easily cloned. c. differentiation leads to the loss of certain genes in each cell. d. somatic cells are incapable of differentiation. e. unexpressed genes are lost during development. ____ 8. Regulation of development takes place mostly at the level of: a. replication. b. transcription. c. posttranscription. d. translation. e. posttranslation. ____ 9. Totipotent nuclei are capable of: a. controlling the expression of other genes in the nucleus. b. directing normal development of an organism. c. causing cells to lose the ability to differentiate. d. undergoing unlimited nuclear divisions. e. stopping the cell cycle at will. ____ 10. One of the main obstacles to successful cloning of sheep apparently overcome by Wilmut et al . was: a. finding an adult nucleus that was likely to work. b.
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This note was uploaded on 10/27/2011 for the course BIO 101 taught by Professor Martin during the Spring '08 term at Rutgers.

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chap 17, 50 development - Name: _ Class: _ Date: _ ID: A...

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