Spring 08 Exam 1 - EXAM 1 YELLOW VERSION 1. What is the...

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Page 1 EXAM 1 YELLOW VERSION 1. What is the role of RNA during DNA replication ? A) RNA is a permanent component of the newly synthesized DNA molecule. B) The RNA is translated into protein. C) It's there because DNA polymerase can only add deoxyribonucleotides to a free 3' -OH end of a pre-existing polynucleotide strand. D) RNA strands are needed to link together newly made DNA fragments. Ans: C 2. In humans, an attached earlobe is due to a recessive allele, e . Hitchhiker's thumbs (curved thumbs) are due to another recessive allele, h . If a man and woman marry who are each heterozygous for both gene loci, what are the chances they have offspring having attached earlobes and no hitchhiker's thumbs? The alleles for these two traits are on separate chromosomes. A) 9/16 B) 3/16 C) 1/2 D) 1/16 E) 1/4 Ans: B 3. Which of the following statement(s) is/are applicable to the cell division phase of this cell? A) This cell is in metaphase of mitosis. B) The diploid chromosome number of this organism must be six (6). C) The law of independent assortment correlates to this phase. D) A, B, and C are all applicable. E) Only B and C are applicable. Ans: E 4. Which of the following is an incorrect statement regarding ribosomes? A) Ribosomes provide the site for protein synthesis. B) Ribosomes catalyze the formation of peptide bonds. C) Ribosomes are comprised of both RNA and proteins. D) The ribosome complex moves along the mRNA transcript in the 3' to 5' direction. E) In eukaryotes, ribosomes carry out their function outside the nucleus in the cytoplasm. Ans: D 5. Which of the following is true regarding Mendel's law of segregation? A) When gametes are formed, each will always get the dominant allele for any given gene. B) When gametes are formed, each gamete will get both parental alleles for each trait. C) When gametes are formed, each gamete will get one of the two parental alleles for each trait. D) This law does not apply to linked genes (i.e., genes on the same chromosome). E) Both C and D are true. Ans: C
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Page 2 6. In comparing mitosis and meiosis II, which of the following in A-D is a false statement? A) The gametes at the end of meiosis II each possess 1/2 of the genetic material that the daughter cells of mitosis each possess. B) The sister chromatids of the chromosomes in mitosis are identical and in meiosis II they are not genetically identical. C) Sister chromatids separate during the process of both mitosis and meiosis II. D) Mitosis begins with a cell having a diploid chromosome number, meiosis II starts with cells each having a haploid chromosome number. E) None of A-D are false, they are all true statements. Ans: E Use the following to answer questions 7-8: The diploid chromosome number of an onion is 16. Answer the questions that follow with one of these numerical responses: A) 0 B) 8 C) 16 D) 32 E) 64 7. How many chromatids would there be in a cell of this onion during metaphase II of meiosis?
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This test prep was uploaded on 04/22/2008 for the course BIOL 1362 taught by Professor Loeblich during the Spring '08 term at University of Houston.

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Spring 08 Exam 1 - EXAM 1 YELLOW VERSION 1. What is the...

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