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Botany Questions and Answers

General Science
77. Sickle cell anaemia is caused by
 
  • A. chromosomal aberrations
  • B. recessive genes
  • C. lethal genes
  • D. none of these
 
 
78. When continuous bleeding takes place, we call that disease
 
  • A. typhoid
  • B. haemophilia
  • C. jaundice
  • D. cancer
 
79. The first vaccination was performed in
 
  • A. 1798
  • B. 1822
  • C. 1768
  • D. 1750
 
80. Deficiency disease are caused by the deficiency of
 
  • A. pathogens
  • B. vectors
  • C. Nutritious food
  • D. all the above