Exam_1 - 1362 Spring 07 Exam 1 YELLOW VERSION 1 Which of the following is not correct concerning interphase A A functioning cell that has not

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Page 1 1362 Spring 07 Exam 1 YELLOW VERSION 1. Which of the following is not correct concerning interphase? A) A functioning cell that has not received a stimulus to divide spends its time in G1 and may go into G0. B) DNA synthesis is completed prior to the start of G2. C) In a tissue, the presence of numerous cells in interphase indicates that this tissue is actively undergoing cell division. D) The chromatin of an interphase nucleus is not discernable under the microscope since it is partially uncoiled in multiple regions rather than a visible, highly condensed form. E) The G1 nucleus has half the amount of DNA as a G2 nucleus. Ans: C 2. In comparing mitosis and meiosis II, which of the following is a true statement? A) In comparing the products of mitosis and meiosis II, the daughter cells at the end of meiosis II each possess 1/4 of the genetic material that the daughter cells of mitosis possess. B) The sister chromatids of the chromosomes in both mitosis and meiosis II are genetically identical. C) The daughter cells of mitosis each contain a mixture of parental and maternal chromosomes, the daughter cells of meiosis II possess either only paternal chromosomes or only maternal chromosomes. D) Homologous chromosomes pairs separate during both mitosis and meiosis II. E) None of the statements A-D are true; all are false. Ans: E 3. How many different gamete genotypes would be formed from an individual with the genotype AaBbCCdd ? A) 4 B) 6 C) 8 D) 16 E) None of the above. Ans: A Use the following to answer questions 4-5: The gametes of a frog have 13 chromosomes. Answer the questions that follow with one of these numerical responses: A) 26 B) 52 C) 13 D) 104 E) 0 4. How many chromatids are present in a cell during metaphase? Ans: B 5. How many tetrads are there in a cell during Prophase I? Ans: C 6. Which of the following statements in A-C is true concerning tRNA, codons & anticodons? A) There is only one codon for each amino acid. B) Only "charged" tRNA molecules would be of use in contributing an amino acid to the growing polypeptide chain during protein synthesis. C) Codons are associated with tRNA's, anticodons with mRNA's. D) None of A-C are true statements. E) A-C are all true statements. Ans: B 7. Which statement below is false ? A) Nonsense mutations result in prematurely shortened polypeptides. B) Hydrogen bonding occurs between complimentary DNA strands but would not be observed in an RNA molecule like tRNA, for example. C) Only mutations in cells that undergo meiosis could be passed onto offspring. D) Frameshift mutations result in the change of many amino acids in a polypeptide rather than just one as in a missense mutation. Ans: B
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Page 2 8. Breeding a yellow dog with a brown dog produced puppies with both yellow and brown hairs intermixed. This is an example of: A) complete dominance B) incomplete dominance C) co-dominance D) a trait due to a sex-linked recessive allele E) a test cross Ans: C Use the following to answer questions 9-13: Information that flows in cells can be broken down into the 3 basic processes listed: A. DNA DNA B.
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This note was uploaded on 04/14/2008 for the course BIOL 1362 taught by Professor Loeblich during the Spring '08 term at University of Houston.

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Exam_1 - 1362 Spring 07 Exam 1 YELLOW VERSION 1 Which of the following is not correct concerning interphase A A functioning cell that has not

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