Genetics

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Across
  1. 2. The male reproductive cell.
  2. 3. An exact copy of the parent organism.
  3. 9. TT or tt
  4. 10. When a sperm cell meet an egg cell.
  5. 12. Human body cells have 46 __________.
  6. 13. The purpose of cell division in a single-celled organism.
  7. 16. The female reproductive cell.
  8. 18. A change in DNA which alters the function of proteins.
  9. 20. Tt
Down
  1. 1. XY chromosomes mean ________.
  2. 2. Reproduction with two parents.
  3. 4. The "brain" of the cell which contains the genes.
  4. 5. The physical trait of an organism.
  5. 6. The more powerful allele.
  6. 7. Reproduction with one parent.
  7. 8. XX chromosomes mean_________.
  8. 11. Offspring of asexual reproduction are _______ to the parent.
  9. 14. Traits can be determined by genes and _________.
  10. 15. The less powerful allele.
  11. 17. One purpose of cell division in a multi-cellular organism.
  12. 18. The process of cell division.
  13. 19. Austrian monk who studied pea plants.