A woman with normal vision, whose father has sex-linked color blindness, marries a man with normal vision. They have a son who has Klinefelter syndrome and is color blind
Describe precisely what kind of event could caused have his Klinefelter syndrome.
Nondisjunction must have occurred in the mother during meiosis II, when sister chromatids normally separate. With Klinefelter syndrome, the boy has an XXY karyotype. Since both of his X chromosomes contain the allele for color blindness, he likely has two copies of one homolog of his mother's X chromosome containing the allele for color blindness.
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A. ligand-gated chloride channels open. B. ligand-gated calcium channels open. C. voltage-gated chloride channels open. D. both ligand- and voltage-gated chloride channels open.
____ is a form of learning typically seen in young animals and involves acquiring specific behaviors in response to key experiences during critical times called ____
Fill in the blank with the appropriate word.
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