Exam _2 [key] - NAME STUDENT ID SECTION TA Academic...

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Unformatted text preview: NAME_____________________________ STUDENT ID #___________________ SECTION #_________________________ TA_____________________________ Academic Honesty/Integrity “I have neither given nor received aid during the administration of this exam.” ___________________________________ (Signature) ______________________________________________________________________ Biology 302 – Exam #2. October 21, 2011 True or False Questions (2 points each) ( MARK “A” for True; “B” for False ): 1. Genes that are located sufficiently close to one another in a chromosome do not undergo linkage, they are said to be assorted independently. (A. TRUE or B. FALSE ). 2. The alleles of linked genes tend to be inherited as a group. (A. TRUE or B. FALSE ). 3. The map distance between genes in a genetic map is unrelated to the rate of recombination between the genes. (A. TRUE or B. FALSE ). 4. Two syntenic genes are on the same linkage group but may not necessarily be linked to one another. (A. TRUE or B. FALSE ). 5. Two genes that recombine 50% of the time are never on the same chromosome. (A. TRUE or B. FALSE ). 6. The vast majority of recombination takes place in heterochromatin; a large distance in the genetic map corresponds to a small distance on the physical chromosome. (A. TRUE or B. FALSE ). 7. At the DNA level, recombination is initiated by a double-stranded break in a DNA molecule. (A. TRUE or B. FALSE ). 8. Dideoxy sequencing is a chain-initiation method of DNA sequencing. (A. TRUE or B. FALSE ). 9. New polynucleotide strands are initiated by a primosome containing RNA polymerase that synthesizes a short RNA primer complementary to a region of the template strand. (A. TRUE or B. FALSE ). 10. The accepted model for homologous recombination is the double-strand break and repair model. (A. TRUE or B. FALSE ). 11. The major DNA polymerase has a 3’-to-5’ polymerase function that serves for proofreading. (A. TRUE or B. FALSE ). 12. In gene expression, information in the nucleotide sequence of DNA is used to dictate the linear order of amino acids in a protein by means of an RNA intermediate. (A. TRUE or B. FALSE ). 13. Ribosomes are particles consisting of DNA, rRNA and numerous proteins combined in small and large ribosomal subunits. (A. TRUE or B. FALSE ). 14. Nearly all organisms use the standard genetic code with 61 codons for 40 amino acids and 3 stop codons (A. TRUE or B. FALSE ). 15. Transcription of an RNA from one strand of the DNA duplex is the second step in gene expression. (A. TRUE or B. FALSE ). 16. In eukaryotes, mature DNA in the nucleus undergoes splicing, capping and polyadenylation prior to export to the cytoplasm. (A. TRUE or B. FALSE ). 17. The alpha carbon in an amino acid is bound to an –R group, -NH2 group and -CO2 group. (A. TRUE or B. FALSE )....
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Exam _2 [key] - NAME STUDENT ID SECTION TA Academic...

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