AP Bio Ch 12 Chromosome & Genes

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1.  In chromosome mapping, one map unit represents
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B.
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E.
2.  Skin color in humans, caused by several genes at several loci, is an example of
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B.
C.
D.
E.
3.  Marfan's disease in humans, with its numerous effects, is an example of
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B.
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E.
4.  A classical example of epistasis is
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B.
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E.
5.  Different pairs of recessive alleles can interfere with a biochemical pathway and thus produce albinism.
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B.
6.  A human male has ____ chromosomes with ____ sex chromosomes.
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B.
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D.
E.
7.  A classical example of codominance is
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8.  Trisomy occurs when a chromosome, usually an autosome, is lost during meiosis.
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B.
9.  What is the hereditary cause of type AB blood?
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B.
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10.  In a case of incomplete dominance, the phenotypic ratio of the F2 generation is the same as the genotypic ratio.
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B.
11.  What causes Down syndrome?
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12.  A small number of recombinants will occur due to crossing over between linked genes on homologous chromosomes.
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B.
13.  A classical example of multiple alleles is
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B.
C.
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E.
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