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Chapter 11: Human Genetics

Practice Test
  1.What is the most commonly inherited disease among black people?  
  a.   Huntington's disease  
  b.   cystic fibrosis  
  c.   hemophilia  
  d.   sickle-cell anemia  
  2.What is a picture of human chromosomes?  
  a.   karyotype  
  b.   ultrasound  
  c.   fetoscope  
  d.   chorionic biopsy  
  3.Which of these is NOT a normal treatment for people with sickle-cell anemia?  
  a.   blood transfusions  
  b.   drugs that increase oxygen-carrying capacity of blood cells  
  c.   physical therapy  
  d.   antibiotics  
  4.Hemophilia is due to a recessive allele on the ____ chromosome.  
  a.   22nd  
  b.   Y  
  c.   X  
  d.   21st  
  5.What is the process in which genetic disorders can be treated by introducing normal alleles into body cells?  
  a.   fetoscopy  
  b.   ultrasonography  
  c.   gene therapy  
  d.   genetic counseling  
  6.What is the disease in which blood does not clot normally?  
  a.   hemophilia  
  b.   cystic fibrosis  
  c.   sickle-cell anemia  
  d.   Huntington's disease  
  7.What body systems does the disease cystic fibrosis affect?  
  a.   the endocrine and digestive systems  
  b.   the circulatory and endocrine systems  
  c.   the circulatory and respiratory systems  
  d.   the respiratory and digestive systems  
  8.What is the process in which fluid surrounding the fetus is withdrawn to check for genetic disorders before a baby is born?  
  a.   genetic counseling  
  b.   ultrasonography  
  c.   amniocentesis  
  d.   chorionc villus biopsy  
  9.What process do prospective parents go through when they want to be sure any future child will be free of genetic defects?  
  a.   marriage counseling  
  b.   genetic engineering  
  c.   gene therapy  
  d.   genetic counseling  
  10.If a normal father and a mother who is a carrier of the allele for hemophilia have children, what is the probability that they will have a daughter who has hemophilia?  
  a.   25%  
  b.   100%  
  c.   50%  
  d.   0%  

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