Exam4VersionAKey - NAME_TA_Lab Section_ Biology 200 EXAM 2...

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NAME___________________________TA_____________Lab Section_______ Biology 200 EXAM 2 Page 1 OF 11 BIOLOGY 200 EXAM 2 Make sure you have 11 pages. Read through the entire question before answering. All questions have only one correct answer. Make sure you mark Version A or Version B on your ScanTron Turn in your test to your TA Each of the 50 multiple-choice questions is worth 2 points. 100 points Total.
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NAME___________________________TA_____________Lab Section_______ Biology 200 EXAM 2 Page 2 OF 11 1. You have decided to do a mutant screen using ENU treated zebrafish to identify zygotic genes . You cross viable and fertile F1 males with wild-type females. Which of the following results would show that you have induced a mutation in a zygotic gene? A. All of the F2 male zebrafish are sterile but the female zebrafish spawn viable secondary oocytes B. After random pair mating of F2 zebrafish, some of the crosses reveal that 25% of the F3 fish have developmental defects C. After random pair mating of F2 zebrafish, some of the crosses reveal that 100% of the F3 fish have developmental defects D. After random pair mating of F2 zebrafish, some of the crosses reveal that 25% of the F3 fish are sterile or produce progeny with developmental defects E. After random pair mating of F2 zebrafish, some of the crosses reveal that 100% of the F3 fish are sterile or produce progeny with developmental defects 2. In amphibians, dorsal ectoderm develops into A. epidermis B. notochord C. endoderm D. the cavity of the digestive tract E. brain and spinal cord 3. During vertebrate somitogenesis A. muscle cells on the opposite side of the embryo send signals to each other B. the cells of the notochord adhere to one another to complete the neural tube C. the cells of a tissue layer reorganize forming a narrowed elongated sheet D. a matrix forms around the exterior of the forming somites E. cell adhesion molecules are internalized, leading to convergent extension 4. In the early development of an amphibian embryo, the "Organizer” is induced by the A. Nieuwkoop Center B. animal pole C. archenteron roof D. dorsal lip of the blastopore E. notochord 5. In Drosophila , which genes are the LAST to be activated in a cascade of gene activation during early development A. maternal effect genes B. gap genes C. pair-rule genes D. egg-polarity genes E. segment-polarity genes
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NAME___________________________TA_____________Lab Section_______ Biology 200 EXAM 2 Page 3 OF 11 6. Which of the following is an example of a possible step in the pre-transcriptional control of gene expression? A. Degradation of mRNA in the cytoplasm B. Binding of transcription factors to the promoter C. Removal of introns and splicing together of exons D. Phosphorylation of a signaling molecule E. All of the above 7. Which of the following lists best represents the sequence of events that occurs in chick development: A. Blastocoel formation -> Somites first visible -> Hensen's node first visible -> Inward migration of prospective notochordal cells B. Hensen's node first visible -> Blastocoel formation -> Somites first visible -> Inward migration of prospective notochordal cells C.
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This test prep was uploaded on 04/07/2008 for the course BIO 200 taught by Professor Cooper during the Spring '04 term at University of Washington.

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Exam4VersionAKey - NAME_TA_Lab Section_ Biology 200 EXAM 2...

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