Ch 8 HW - Ch 8 HW 092209 MCQ: 1) When an organism gains or...

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Ch 8 HW 092209 MCQ: 1) When an organism gains or loses one or more chromosomes but not a complete haploid set, the condition is known as; A) polyploidy B) euploidy C) aneuploidy D) triploidy E) Trisomy 2) Cri-du-chat syndrome has a genetic composition designated as, A) 45, X B) Heteroplasmy C) 46, 5p- D) Triploidy E) Trisomy 3) A genomic condition that may be responsible for some forms of fragile-X syndrome as well as Huntington’s disease, involves A) plasmids inserted into the FMR-1 gene B) various lengths of trinucleotide repeats C) multiple breakpoints fairly evenly dispersed along the X chromosome D) multiple inversions in the X chromosome E) single translocations in the X chromosome 4) Recently, a gene located on chromosome 3 in humans, FHIT has been shown to be associated with A) cancer B) Huntington’s disease C) Mad-cow disease D) Klinefelter syndrome E) XYY/ XY mosaicism 5) In Trisomy 21 or Down syndrome, although there is reduced fertility in both sexes females are more fertile than males. Assume that children are born to female with Down syndrome and a normal male. What proportion of children would be expected to have Down syndrome?
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A) 1/3 B) 2/3 C) All D) None E) ½ TRUE/ FALSE: 1) Nondisjunction is considered as a major cause of aneuploidy. T/ F
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This note was uploaded on 07/04/2011 for the course BIO 325 taught by Professor Saxena during the Fall '08 term at University of Texas at Austin.

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Ch 8 HW - Ch 8 HW 092209 MCQ: 1) When an organism gains or...

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