Heredity and Environment (ch.3)

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Across
  1. 2. when an ova is surgically removed from a women and mixed with sperm
  2. 4. The different parts of DNA
  3. 7. The basic units of heredity
  4. 12. female______
  5. 15. entire ______ inheritance
  6. 18. identical twins
  7. 19. genes that combine to make __________
  8. 20. a variant of a gene
  9. 21. another word for sperm and ovum
  10. 23. inability to _______ after least a year
  11. 24. the genes found in the X chromosome
Down
  1. 1. genes that have a ________ influence over _______ genes
  2. 3. when the code of a gene from one parent differs from the code of its __________ from the other gene
  3. 5. Instructions to make a ______
  4. 6. genes that cause distinctions
  5. 8. when the gene from one parent ________ from the other parent
  6. 9. a medical intervention to help couples conceive
  7. 10. male ______
  8. 11. XY or XX determinate
  9. 13. when the female and male gamete fuse
  10. 14. long string of amino acids
  11. 16. the genes that are _______
  12. 17. fraternal twins
  13. 20. building blocks of life
  14. 22. the thing that makes everyone unique