Discussion 3 Summer 2009

Discussion 3 Summer 2009 - GENETICS (BIO F325) Summer 2009...

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GENETICS (BIO F325) Summer 2009 Discussion 3 ________________________________________________________________ 1. (i) Chromatids joined together at the centromere are called: (a) Homologs (b) Alleles (c) Non-sister chromatids (d) Sister chromatids (ii) Meiosis differs from mitosis with respect to the presence of (a) Chromatids (b) Homologs (c) Bivalents (d) Centromeres 2 Ignoring the effects of chromosome crossovers, how many genetically different gametes can an individual human produce? In humans, each diploid cell has 23 pairs of chromosomes. 3 For each of the following sentences, fill in the blanks with the correct word selected from the list given below. Use each word only once. (a) In eukaryotic chromosomes, DNA is complexed with proteins to form ___________________. (b) The paternal and maternal copies of human chromosome 1 are __________________. (c) When histone proteins are removed from chromosomes, a densely staining central core of nonhistone protein called a _________________ is observed. (d) X chromosome inactivation is the mechanism used in _________________
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This note was uploaded on 06/15/2009 for the course BIO 89165 taught by Professor Saxena during the Summer '09 term at University of Texas at Austin.

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Discussion 3 Summer 2009 - GENETICS (BIO F325) Summer 2009...

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