202pracexam1A

202pracexam1A - Biology 202 Summer 2007 Exam 2 MATCHING:...

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Biology 202 Summer 2007 Exam 2 MATCHING: Match the definition with the correct term. Use any term only once. 1 pt each 1. _____ A highly condensed mass of DNA found in the nuclei of normal female cells but not in the nuclei of normal male cells 2. _____ Gene regulation in which binding of a protein to DNA inhibits transcription 3. _____ A unit of DNA packaging in eukaryotes that consists of a segment of DNA wound around a histone octamer core. 4. _____ Transduction that results from a mistake in the lytic cycle of viral replication 5. _____ Describes a bacterial cell that contains the F factor and is capable of initiating conjugation. 6. _____ A small molecule that inactivates the repressor in an inducible operon. 7. _____ Region of the X chromosome known to be responsible for “counting” of the number of X chromosomes in a cell. a. enhancer f. activator k. negative regulation b. F + g. positive regulation l. generalized transduction c. XIST h. inducer m. F - d. co-repressor i. Xce n. XIC e. nucleosome j. Barr body o. specialized transduction MULTIPLE CHOICE: Select the best (one) answer from the answers provided. 2 pts each
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1. Reginald has hemophilia A, an X-linked recessive disorder. He marries Lydia, a non- hemophiliac, whom he met at the hospital where he and Lydia’s brother Marvin, receive their treatment for hemophilia A. Lydia and Marvin’s mother has hemophilia. What is the probability that Reginald and Lydia will have a child with hemophilia? a. 1/2
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202pracexam1A - Biology 202 Summer 2007 Exam 2 MATCHING:...

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