EEB 13 Midterm SQ2007

EEB 13 Midterm SQ2007 - EEB 13 Midterm, 3 May 2007 p. 1...

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EEB 13 Midterm, 3 May 2007 p. 1 Name: You need to put your name only on the first page. There are 5 pages and 86 points. (10) Suppose hair color was controlled by the “ H ” (hair)locus. Individuals with the HH genotype have black hair, those with Hh have brown hair, those with hh are blond. If two brown-haired individuals mate and have lots of kids, what are the expected proportions of genotypes and phenotypes of their children? Use a Punnett square to show the proportions of gametes produced by each parent to find your answer. [Note: Actually hair color is not determined this way - it’s much more complex than this!] (16) Matching: From the following list of numbers, place in the blank the number appropriate to the situation or definition. Numbers may be used once, more than once, or not at all. 0 1 4 1/4 2 6 1/2 3 9 _____: The number of base pairs in a DNA molecule needed to specify one amino acid in a protein. _____: After meiosis, gametes have this number of copies of each different kind of chromosome. _____: In an individual showing Down’s Syndrome, each cell has this number of copies of chromosome #21. _____: The number of different possible diploid genotypes if there are three alleles in a population ( A, a, a’ ). _____: In Mendel’s experiments with peas, what is the proportion of “hybrid’ yellow offspring produced when two “hybrid” yellow peas are crossed? _____: If two individuals are both
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EEB 13 Midterm SQ2007 - EEB 13 Midterm, 3 May 2007 p. 1...

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