Exam 1 (2008 b) - Biol 3301 Exam #1 September 25th, 2008...

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Biol 3301 Exam #1 September 25 th , 2008 There are a total of 9 pages in this exam. This exam consists of 28 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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1) A genotype 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 Questions 2-5: You have performed the following Dihybrid cross in Drosophila using the recessive white ( w ) and miniature wing ( m ) mutations. The w+ (Red- eyed) and m+ (normal Wing) are dominant wild type alleles. These genes are on the Drosophila X-chromosome. w m X w m w+ m+ Y Progeny: Phenotype # of Progeny White-eyed, miniature wing 382 Red-eyed, normal wing 395 White-eyed, normal wing 223 Red-eyed, miniature wing 247 Total Progeny 1247 2) Assuming independent segregation what is the χ 2 value? a. 3 b. 76.775 c. 311.75 d. 0.25 e. 0.05 3) How many degrees of freedom for this χ 2 test? a. 1 b. 4 c. 0.05 d. 3 e. 311.75 4) Referring to the χ 2 table below, which of the following statements is true: a. The probability of having a χ 2 value this large is greater than 0.05 b. The data supports independent segregation c. In this experiment, any χ 2 value equal to or greater than 7.815 is significant and the hypothesis is rejected d. In this experiment, any χ 2 value equal to or greater than 5.024 is significant and the hypothesis is rejected e. The χ 2 value proves linkage.
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5) Assuming linkage between white and miniature wing , the estimated recombination frequency would be: a. 0.377 b. 0.179 c. 470 d. 0.623 e. 0.5 6) The following pedigree is most consistent with: a. Autosomal recessive b. Autosomal dominant c. Sex-linked recessive d. Cytoplasmic inheritance e. Paternal Inheritance
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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 (2008 b) - Biol 3301 Exam #1 September 25th, 2008...

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