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Chapter 11: Human Genetics

Practice Test
      
  1.Which of these is NOT a normal treatment for people with sickle-cell anemia?  
  a.   blood transfusions  
  b.   antibiotics  
  c.   drugs that increase oxygen-carrying capacity of blood cells  
  d.   physical therapy  
  Hint    
      
  2.What is the disease in which blood does not clot normally?  
  a.   hemophilia  
  b.   sickle-cell anemia  
  c.   Huntington's disease  
  d.   cystic fibrosis  
  Hint    
      
  3.What is the process in which fluid surrounding the fetus is withdrawn to check for genetic disorders before a baby is born?  
  a.   amniocentesis  
  b.   chorionc villus biopsy  
  c.   genetic counseling  
  d.   ultrasonography  
  Hint    
      
  4.What two kinds of ions are involved in cystic fibrosis?  
  a.   iron and hydrogen ions  
  b.   sodium and chloride ions  
  c.   sodium and sulfur ions  
  d.   chloride and iron ions  
  Hint    
      
  5.What is a picture of human chromosomes?  
  a.   chorionic biopsy  
  b.   karyotype  
  c.   fetoscope  
  d.   ultrasound  
  Hint    
      
  6.Which of these diseases is caused by a dominant gene?  
  a.   Huntington's disease  
  b.   sickle-cell anemia  
  c.   hemophilia  
  d.   cystic fibrosis  
  Hint    
      
  7.What is the process in which cells from a tissue inside the womb are removed and grown to provide a karyotype of the fetus?  
  a.   genetic counseling  
  b.   gene therapy  
  c.   amniocentesis  
  d.   chorionic villus biopsy  
  Hint    
      
  8.What disease is caused by a defect in either of two alleles located on the X chromosome?  
  a.   sickle-cell anemia  
  b.   cystic fibrosis  
  c.   hemophilia  
  d.   red-green color blindness  
  Hint    
      
  9.A person who is heterozygous for sickle-cell anemia has a condition known as sickle-cell trait. What disease does sickle-cell trait protect a person against?  
  a.   malaria  
  b.   influenza  
  c.   hemophilia  
  d.   color blindness  
  Hint    
      
  10.What is the process in which genetic disorders can be treated by introducing normal alleles into body cells?  
  a.   fetoscopy  
  b.   gene therapy  
  c.   genetic counseling  
  d.   ultrasonography  
  Hint    

 
   
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