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Chapter 11: Human Genetics

Practice Test
      
  1.What is a picture of human chromosomes?  
  a.   karyotype  
  b.   ultrasound  
  c.   chorionic biopsy  
  d.   fetoscope  
  Hint    
      
  2.Which of these is NOT a normal treatment for people with sickle-cell anemia?  
  a.   physical therapy  
  b.   antibiotics  
  c.   blood transfusions  
  d.   drugs that increase oxygen-carrying capacity of blood cells  
  Hint    
      
  3.What is the disease in which blood does not clot normally?  
  a.   sickle-cell anemia  
  b.   hemophilia  
  c.   Huntington's disease  
  d.   cystic fibrosis  
  Hint    
      
  4.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.   amniocentesis  
  b.   gene therapy  
  c.   genetic counseling  
  d.   chorionic villus biopsy  
  Hint    
      
  5.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 son who has hemophilia?  
  a.   0%  
  b.   50%  
  c.   100%  
  d.   25%  
  Hint    
      
  6.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.   hemophilia  
  b.   influenza  
  c.   malaria  
  d.   color blindness  
  Hint    
      
  7.The presence of three of one kind of chromosome is known as _________ .  
  a.   hemophilia  
  b.   trisomy  
  c.   karyotyping  
  d.   translocation  
  Hint    
      
  8.By how many codons is the gene for sickle-cell anemia hemoglobin different from normal hemoglobin?  
  a.   two  
  b.   four  
  c.   one  
  d.   three  
  Hint    
      
  9.What process do prospective parents go through when they want to be sure any future child will be free of genetic defects?  
  a.   genetic counseling  
  b.   marriage counseling  
  c.   gene therapy  
  d.   genetic engineering  
  Hint    
      
  10.What is the process in which fluid surrounding the fetus is withdrawn to check for genetic disorders before a baby is born?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.   ultrasonography  
  d.   genetic counseling  
  Hint    

 
   
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