1362-SP10-Exam-1-Rev_40646

1362-SP10-Exam-1-Rev - Prokaryotic Cell Single circular chromosome Simple fission chromosome duplicates cell splits in two form clones clones

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Prokaryotic Cell Eukaryotic Cell ultiple linear DNA (chromatin) Multiple, linear chromosomes reside in nucleus Single, circular chromosome Stimulus initiates Controlled by Cell Cycle Simple fission; chromosome cell division duplicates, cell splits in two: rm clones Interphase: G1-S-G2; Æ form clones chromosomes replicated Eukaryotes: accurate Diploid somatic cell undergoes mitosis : form 2 Diploid sex cell undergoes meiosis : form 4 movement & partitioning of chromosomes quires microtubules & diploid clones genetically distinct haploid gametes requires microtubules & formation of spindle during mitosis/meiosis
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Chromosome Terminology Key aternal set of Maternal set of chromosomes ( n = 3) Paternal set of 2 n = 6 chromosomes ( n = 3) Two sister chromatids f one replicated of one replicated chromosome Centromere Two nonsister hromatids in Pair of homologous chromatids in a homologous pair chromosomes (one from each set)
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A diploid cell in G1: ) as homologous chromosomes a) has homologous chromosomes b) has replicated chromosomes c) has sister chromatids d) is about to divide into 2 cells e) none of A-D apply to a cell in G1 Chromosome movements during mitosis or meiosis requires all the following except : A) microtubules B) centrosomes C) kinetochores D) highly condensed chromosomes E) There are no exceptions, A-D are all required.
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Which of the following is false of chromatids? ) hey are replicated chromosomes joined together at a) They are replicated chromosomes joined together at the centromere. b) They are identical in mitotic chromosomes. c) If chromatids fail to separate during mitosis/meiosis, chromosomal aneuploidies can result. d) An unreplicated chromosome = 1 chromatid e) None of A-D are false; they are all true statements. The gametes of a red fox have 17 chromosomes. How many chromatids are present during metaphase I? How many replicated chromosomes in a telophase I cell?
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Which is false concerning homologous chromosomes? a) They behave independently during mitosis b) They synapse during prophase I of meiosis c) They travel together to the metaphase plate during meiosis I d) A diploid individual will have received one chromosome from each homologous chromosome pair from each parent.
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This note was uploaded on 04/23/2010 for the course BIOL 1361 taught by Professor Knapp during the Spring '05 term at University of Houston.

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1362-SP10-Exam-1-Rev - Prokaryotic Cell Single circular chromosome Simple fission chromosome duplicates cell splits in two form clones clones

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