biol1201 quiz 17

biol1201 quiz 17 - usually expressed in a peculiar way: A...

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Name: Quiz 17 Status : Completed Score: 30 out of 30 points Time Elapsed: 0 hours, 0 minutes, and 50 seconds out of 1 hours and 0 minutes allowed. Instructions: Question 1 5 of 5 points When a person has Down syndrome, he or she has an extra chromosome 21. Therefore, Down syndrome is a kind of _____ and results from _____. Selected Answer: aneuploidy . .. nondisjunction of chromosome 21 during meiosis I Question 2 5 of 5 points Hemophilia is a sex-linked disorder. The daughter of a father with hemophilia and a carrier mother has a _____ probability of having hemophilia. Selected Answer: 50% Question 3 5 of 5 points Which one of the following is the only known viable human monosomy? Selected Answer: XO Question 4 5 of 5 points A genetic defect in humans results in the absence of sweat glands in the skin. Some men have this defect all over their bodies, but in women it is
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Unformatted text preview: usually expressed in a peculiar way: A woman with this defect typically has small patches of skin with sweat glands and other patches without sweat glands. In women, the pattern of sweat-gland distribution can best be explained by _____. Selected Answer: X chromosome inactivation Question 5 5 of 5 points A person with two X chromosomes and one Y chromosome would appear to be _____. Selected Answer: male Question 6 5 of 5 points In Klinefelter syndrome, individuals are phenotypically male, but they are tall and thin, have a female-like development of the hips and breasts, and have testes that remain in the abdomen instead of descending into the scrotum. The cells of Klinefelter individuals have two X chromosomes and one Y (they are XXY instead of XY). That is, Klinefelter syndrome is a(n) _____. Selected Answer: aneuploidy...
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This note was uploaded on 04/10/2008 for the course BIOL 1201 taught by Professor Wishtichusen during the Spring '07 term at LSU.

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biol1201 quiz 17 - usually expressed in a peculiar way: A...

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