Exam 1 (2010 a) - BIOL 3301 Midterm Exam #1 September 23rd,...

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1 BIOL 3301 Midterm Exam #1 Morning Blue September 23 rd , 2010 There are a total of 11 pages in this exam. This exam consists of 34 questions worth a total of 100 points. All questions are multiple-choice and there is one best answer for each question. Record your answers on the scantron sheet, and answer only once for each question or you will be automatically marked wrong. Use a #2 pencil. Name_________________________ ID#__________________________
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2 1. The trait segregating in the following pedigree is most likely: a. cytoplasmic b. autosomal recessive c. sex-linked recessive d. autosomal dominant e. autosomal sex-limited 2. What do you need to find the function of a gene? a) independent assortment b a mutation in the gene c) sexual reproduction d) meiosis 3. A mutation in the yellow gene Y gives mice yellow coats . What proportion of the F 1 offspring of a mating between two Y + /y mice will have yellow coats? a) 1/4 b) 1/3 c) 1/2 d) 2/3 e) 3/4 4. What do all males inherit from their mothers? a. X chromosome. b. Y chromosome. c. genes for mutant color vision. d. both B and C are correct.
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3 Questions 5 - 8 . You have performed the following Dihybrid cross in Drosophila using the recessive orange eye ( o ) and mini wing ( m ) mutations. The o+ (Red-eyed) and m+ (normal Wing) are dominant wild type alleles. o m X o m o+ m+ o m Progeny: Phenotype # of Progeny Orange-eyed, mini wing 382 Red-eyed, normal wing 395 Orange-eyed, normal wing 223 Red-eyed, mini wing 247 Total Progeny 1247 5. Assuming independent segregation what is the Chi 2 value? a. 311.75 b. 76.775 c. 0.25 d. 0.05 e. 3 6. How many degrees of freedom for this Chi 2 test? a. 1 b. 4 c. 0.05 d. 3 e. 311.75 7. Referring to the Chi 2 table below, which of the following statements is true: a. The probability of having a Chi 2 value this large is greater than 0.05 b. The data supports independent segregation c. In this experiment, any Chi 2 value equal to or greater than 7.815 is significant and the hypothesis is rejected d. In this experiment, any Chi 2 value equal to or greater than 5.024 is significant and the hypothesis is rejected
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4 8. Assuming linkage between orange and mini wing , the estimated recombination frequency would be: a. 0.377 b. 0.179 c. 470 d. 0.623 e. 0.5 9 . A phenotype is a. The complete compliment of genes in a species b. The outwardly manifested trait c. An individuals internally encoded trait as represented by specific alleles d. A graphic display of inheritance patterns e. When a trait is not encoded by the nucleus 10 . If inheritance of a human trait is sex-linked (on the X chromosome) and recessive, any of the following could result EXCEPT that; a. expression of the trait might "skip" a generation. b. the trait could be found more often in females than males.
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This note was uploaded on 12/02/2011 for the course BIOL 3301 taught by Professor Gunaratne during the Spring '05 term at University of Houston.

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Exam 1 (2010 a) - BIOL 3301 Midterm Exam #1 September 23rd,...

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