Ch-15-Test-Questions no diagram

The following human aneuploidies which is the one

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43) Of the following human aneuploidies, which is the one that generally has the most severe impact on the health of the individual? A) 47, +21 B) 47, XXY C) 47, XXX D) 47, XYY E) 45, X Answer: A Topic: Concept 15.4 Skill: Knowledge/Comprehension 44) A phenotypically normal prospective couple seeks genetic counseling because the man knows that he has a translocation of a portion of his chromosome 4 that has been exchanged with a portion of his chromosome 12. Although he is normal because his translocation is balanced, he and his wife want to know the probability that his sperm will be abnormal. What is your prognosis regarding his sperm?
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45) Abnormal chromosomes are frequent in malignant tumors. Errors such as translocations may place a gene in close proximity to different control regions. Which of the following might then occur to make the cancer worse? 46) Women with Turner syndrome have a genotype characterized as which of the following? 47) The frequency of Down syndrome in the human population is most closely correlated with which of the following? A) Frequency of new meiosis B) Average of the ages of mother and father C) Age of the mother D) Age of the father E) Exposure of pregnant women to environmental pollutants Answer: C Topic: Concept 15.4 Skill: Knowledge/Comprehension 48) An inversion in a human chromosome often results in no demonstrable phenotypic effect in the individual. What else may occur?
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  • Spring '10
  • Edson
  • Genetics, Down syndrome, Skill, Turner syndrome

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