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Questions 12-13 The gene for fingernail texture is found on
the X-chromosome. Smooth fingernail is dominant to rough
fingernail. Assume recombination does not occur. For
each of the following families, identify the possible
nondisjunction events (rare mistakes during meiosis) that could
explain the phenotype of the offspring.
1.An XX parent with rough fingernails and an XY parent with
smooth fingernails have an offspring with Klinefelter Syndrome
(genotype XXY) with rough fingernails. Non-disjunction might have
occurred in Meiosis II of the XX parent.
a.
True
b.
False
2.An XX parent with smooth fingernails and an XY parent with
rough fingernails have an offspring with Klinefelter Syndrome
(genotype XXY) with rough fingernails. Non-disjunction might have
occurred in Meiosis I of the XY parent.
a.
True
b.
False
[Questions 12-13] The gene for fingernail texture is found on the X-chromosome. Smooth fingernail is dominant to rough fingernail. Assume recombination does not occur. For each of the following families, identify the possible nondisjunction events (rare mistakes during meiosis) that could explain the phenotype of the offspring.
An XX parent with rough fingernails and an XY parent with smooth fingernails have an offspring with Klinefelter Syndrome (genotype XXY) with rough fingernails. Non-disjunction might have occurred in Meiosis II of the XX parent. a. True Ob. False Clear my choice An XX parent with smooth fingernails and an XY parent with rough fingernails have an offspring with Klinefelter Syndrome (genotype XXY) with rough fingernails. Non-disjunction might have occurred in Meiosis I of the XY parent. a. True b. False Today, 7:05:53 PM