Two genes on each of four homologous chromosomes (HC) are described here, but only one of each
pair of sister chromatids is listed (HC1 and HC2). Capital and lower case indicate different alleles of
the same gene. What four gametes will result from a single chiasma if the chromosomes have the
following genes: HC1: Ab; HC2: aB?
a. Ab, AB, ab, aB
b. Ab, Ab, aB, aB
c. Aa, Bb, ab, Ab.
d. Ab, Ab, AB, AB
e. AB, AB, ab, ab
A
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