mt2Key - BICD 100, Genetics, 2nd Midterm May 21, 2008 Name:...

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BICD 100, Genetics, 2 nd Midterm May 21, 2008 Name: ________________________ I.D.: ___________________ Grading Grid: Section #: ___________ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ I) (40pts, 10@) 1) Polyploid is multiples of n, polytene are bundles of chromosomes 2) Haploid is n chromosomes, hemizygous is n for only a gene or one chromosome or portion of genes. 3) Euchromatin is lightly staining active gene loci, heterochromatin is darkly staining few active genes. 4) Sex limited is a phenotype expressed in only one sex, sex-influenced is a phenotype expressed in both sexes but dom-rec influenced by sex. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ II) (10pts@) 1) C, the chromosome number is 60 2) B, non-disjunction during Meiosis II
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mt2Key - BICD 100, Genetics, 2nd Midterm May 21, 2008 Name:...

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