Final - 1 Name ID BIS 101 03 Final READ THE FOLLOWING...

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1 Name:________________________________ ID:____________________ BIS 101 - 03 Final June 10, 2006 READ THE FOLLOWING INSTRUCTIONS: Write your name and ID # LEGIBLY on each page of this exam. All work must be done in INK. Show ALL your work. This exam is worth 200 points. You have 110 minutes to complete the exam. ______________________________________________________________ AUTHORIZATION FOR PUBLIC DISTRIBUTION OF GRADED EXAMINATIONS I, _________________________________, ID#__________________________ authorize the University to publicly distribute my graded examination for BIS 101-03. Date_______________ Signed:____________________________________ I, _________________________________, ID#__________________________ hereby certify that I have read and understood all the instructions given on this page. I also hereby agree not to give or take any outside help from other students and/or any written material during this examination. I certify that all the work presented here was executed by me and that I understand that the rules and regulations predicted in the University's Code of Academic Conduct will be applied if necessary. GOOD LUCK!
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2 P a g e : 3 ________ 4 ________ 5 ________ 6 ________ 7 ________ 8 ________ 9 ________ 8________ 9 ________ 10 ________ 11 ________ 12 ________ 13 ________ 14 ________ 15 ________ 16 ________ Total ________ Bonus ________
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3 Name:______________________________ (1) In maize, the DNA in several nuclei was quantified on the basis of its light absorption. The measurements were (in relative units): 0.7 1.4 2.1 2.8 4.2 Write in the cell and/or tissue type from which nuclei could have been used for these measurements? (5 points) (2) What are the genotypes of the daughter cells when a cell of the genotype AaBbCc, with each gene pair on a different chromosome pair, divides mitotically? (4 points) (3) Populations of diploid goatgrass species Aegilops tauschii (genomes DD) and Aegilops caudata (genomes CC) overlap in nature and two species often hybridize. Diagram how allotetraploid Aegilops cylindrica (genomes DDCC) could have originated via such hybridization. (6 points) (4) The bilateral gynandromorphism is caused by: Circle the most correct answer. (3 points) (i) a human disorder, (ii) meiotic nondisjunction of sex chromosomes, (iii) mitotic nondisjunction of a sex chromosome, (iv) meiotic nondisjunction of a pair of autosomes, (iv) mitotic nondisjunction of a pair of autosomes, (vi) somatic recombination, (vii) none of the above.
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4 Name:______________________________ (1) Early in the development of a plant, a mutation in a chloroplast DNA (cpDNA) destroys one of the Bam HI restriction site (B). In this species cpDNA is inherited maternally. Seeds from the plant are grown and the resulting progeny are individually sampled for cpDNA. The cpDNAs are cut with Bam HI restriction endonuclease, and Southern blots are hybridized with a cloned fragment P of cpDNA (see the figure below). The autoradiograms show three patterns of hybridization with the Southern blot: 1, 2, and 3 (below). normal cpDNA mutant cpDNA BB B 1 2 3 P (a) The cause of pattern 1 observed in progeny is: (2 points) (b) The cause of pattern 2 observed in progeny is: (2 points) (c) The cause of pattern 3 observed in progeny is: (2 points) (2) Humans have 2n = 46 chromosomes. Human embryos are occasionally conceived that have abnormal chromosome numbers and are ultimately aborted. Name the following states in which embryo cells have: (a) 69 chromosomes: (2 points) (b) three chromosomes no. 2: (2 points) (c) female embryo with only one X chromosome: (2 points)
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5 Name:______________________________ (1)
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This note was uploaded on 10/07/2009 for the course BIS 52192 taught by Professor Enochbaldwin during the Fall '09 term at UC Davis.

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Final - 1 Name ID BIS 101 03 Final READ THE FOLLOWING...

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