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AP Bio Ch 12 Chromosome & Genes

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