exam_3_key_new_1

exam_3_key_new_1 - Name_ LS4 Midterm 3- 2005 Circle TA...

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Name________________________ LS4 Midterm 3- 2005 Circle TA name: David Dee Devon Emily Jennifer Kerry Lindsey Nancy Rosemarie Instructions: 1. Before you start, count your pages. The exam should have nine pages including this one. Write your name on each page. 2. Use a black or blue pen. If we cannot read your answer, you will not receive credit. 3 . Show all work! Full and partial credit will only be given for complete answers including calculations. 4. All books, notes and cell phones must be put in zipped backpacks. 5. For all questions, you can assume complete penetrance and expressivity. MC. 30 pts ______ 1. 12 pts ______ 2. 10 pts ______ 3. 12 pts ______ 4. 12 pts ______ Score:___________ 5. 12 pts ______ 6. 12 pts ______ 7. 12 pts ______ total 100 ______
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Name________________________ Multiple choice 5 points each - circle the single best answer for each question Which one of the following principles does not apply to inheritance of the ABO bloodtype: a. co-dominance b. complete dominance c. mendelian segregation d. multiple alleles e. incomplete dominance DNA from a strain of B. subtilis with the genotype a+ b- c+ e+ is used to transform a strain with the genotype a- b+ c- e-. In this bacterial strain the a- marker is lys auxotrophy and the b- c- and e- markers are trp auxotrophs. Selection of lys prototophs on media supplemented with trp yielded many colonies. Replica plating to minimal media resulted in about half the colonies growing. Which order of genes is most consistent with these data? a. a b c e b. a b e c c. a c b e d. a c e b e. a e b c Crosses of curly wing flies to normal wing flies always give 50% normal winged progeny, regardless of which curly wing strain is used. To investigate this, you mate a curly wing male to a curly wing female and get 160 progeny with curly wings and 80 with normal wings. What fraction of the 160 curly wing progeny from the above cross do you expect to be homozygous for the curly wing determinant? a. 0 b 1/4 c. 1/3 d. 7/16 e. 2/3 f. 9/16
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Name________________________ The following cotransduction data were obtained after mating a donor of genotype cys+leu+ thr+ to a cys-leu- thr- recipient and selecting for cys+. Replica plating indicated that 56% are cys+leu+ ; 5% cys+ thr+ ; 0% cys+ leu+ thr+. Which map below best represents the spacing and
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This note was uploaded on 07/08/2009 for the course LIFESCI ls 4 taught by Professor Merriam during the Winter '08 term at UCLA.

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exam_3_key_new_1 - Name_ LS4 Midterm 3- 2005 Circle TA...

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