Reading%20Guide%20Chapter%2015

Reading%20Guide%20Chapter%2015 - unlinked genes. 8....

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Biol 2107 Reading Guide: Chapter 15 1. Explain how the observations of cytologists and geneticists provided the basis for  the chromosome theory of inheritance. 2. Explain why  Drosophila melanogaster  is a good experimental organism for genetic  studies. 3. Describe how sex is genetically determined in humans and explain the significance  of the  SRY  gene. 4. Explain why sex-linked diseases are more common in human males. 5. Describe the process of X inactivation in female mammals. Explain how this  phenomenon produces the tortoiseshell coloration in cats. 6. Distinguish between linked genes and sex-linked genes.  7. Describe the independent assortment of chromosomes during Meiosis I. Explain  how independent assortment of chromosomes produces genetic recombination of 
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Unformatted text preview: unlinked genes. 8. Distinguish between parental and recombinant phenotypes. 9. Explain why linked genes do not assort independently. Explain how crossing over can unlink genes. 10.Explain why Mendel did not find linkage between seed color and flower color, despite the fact that these genes are on the same chromosome. 11.Explain the effect of multiple crossovers between loci. 12.Explain how nondisjunction can lead to aneuploidy. 13.Define trisomy, triploidy, and polyploidy. Explain how these major chromosomal changes occur and describe possible consequences. 14.Distinguish among deletions, duplications, inversions, and translocations. 15.Explain why extranuclear genes are not inherited in a Mendelian fashion....
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