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Question 1 of 6
Human blood type is a codominant trait, with A and B alleles expressing dominance to the O allele. A married couple is concerned because while the mother is type A, and the father is type B, their first child is type O. Is this possible, or were they given the wrong child at the hospital? Use a Punnett square to confirm your answer.
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Question 2 of 6
Louis IV, the grand duke of Hesse, married Princess Alice of the United Kingdom in 1862. They had six children: Irene and Alix were girls who carried the trait for the sex-linked genetic disease of hemophilia, Fred, a boy who contracted hemophilia, and three normal girls. Write out the pedigree chart for this portion of the royal family.
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Question 3 of 6
Neither Louis IV nor Princess Alice ever expressed symptoms of hemophilia. Why did one of their children contract it?
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Question 4 of 6
Interphase is sometimes referred to as the “resting stage”. This is a very inaccurate way to describe interphase. Explain what cells are doing in interphase. Your answer should include each of the non-mitotic parts of the cell cycle.
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Question 5 of 6
Asexual organisms can rely on mitosis to reproduce. Sexual organisms must use both mitosis and meiosis. Give an example of a sexual and asexual organism. What is an advantage and disadvantage to each of the different methods of reproduction?
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Question 6 of 6
Explain what cancer is, including the two different types of tumors that can form.
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