Brain and Genes Puzzle

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Across
  1. 2. Two genetically identical organisms
  2. 4. Genetic constitution of an organism
  3. 5. Traits are passed from parents to their children
  4. 8. The range of populations and environments studied
  5. 9. A polymer composed of two polynucleotide chains that coil around each other
Down
  1. 1. Environmental factors influence human behavior, personality, and development
  2. 3. Develop from two separate eggs fertilized by two different sperm
  3. 4. The complete set of genetic instructions for an organism
  4. 6. Containing part or all of the genetic material of an organism
  5. 7. Genetic inheritance