Genetics & Heredity Quiz Review

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Across
  1. 2. how much of their chromosomes do parents pass down
  2. 5. the ultimate goal of the HGP was to be able to ______ _______
  3. 6. characteristics of an organism
  4. 9. a long thread like molecule that is 3 billion base pairs long
  5. 11. the DNA molecule looks like a _____ staircase or _____ ladder
  6. 14. the four letters of the DNA code are A,T,__,__
  7. 17. the process of passing traits from an organism to its offspring
  8. 19. how many total chromosomes do humans have
  9. 21. genes have the specific _____ for ______
  10. 22. an example of a trait
  11. 23. the first goal of the HGP was to figure out the ____ of the DNA code
  12. 24. a living thing
  13. 25. the shape of a DNA molecule is a ______ helix
  14. 26. DNA is the ________ book for a living thing
  15. 27. how many pairs of chromosomes do humans have
Down
  1. 1. a project of scientists around the world to research human DNA
  2. 3. substances that create our traits
  3. 4. pieces or sections of the DNA code
  4. 7. _____ bases - another word for steps of the ladder
  5. 8. another word for steps of the DNA ladder = _____ pairs
  6. 10. the study of heredity
  7. 12. a disease or illness caused by a change in the genetic code
  8. 13. a change in the DNA code
  9. 15. all of an organism's DNA
  10. 16. the next generation of a living thing
  11. 18. mutations can be ______ or _________
  12. 20. the "weaker" form of a trait
  13. 25. the form of a trait that usually shows up more often in a population