DO YOU KNOW SUCH THINGS?

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Across
  1. 4. ... which represents the genetic makeup of an organism, contains all of its hereditary information.
  2. 5. which are biological products prepared to provide immunity against an infection, are administered to the body through various means
  3. 7. ...who said that all life forms descended from a common ancestor, made significant contributions to the theory of evolution.
  4. 9. microscopic infectious agents that can only infect living cells and thus replicate
Down
  1. 1. study heredity and variation in organisms, which is the branch of biology concerned with such studies
  2. 2. The process by which DNA is copied to make a new strand of DNA
  3. 3. ... is Gregor Mendel's middle name, which he used throughout his life
  4. 6. Where are the best molecular biology and genetics students?
  5. 8. ...is the month that is celebrated as DNA Day all over the world.