Evolution and Natural selection

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Across
  1. 1. distinguishing feature of your personal nature
  2. 4. act of choosing
  3. 5. the state of remaining alive
  4. 6. measure of how likely it is that some event will occur
  5. 7. Occurring among members of a family usually by heredity
  6. 8. part of DNA controlling physical characteristics and growth
  7. 10. science that studies living organisms
  8. 11. undergo development
  9. 16. organisms evolve to adapt to environment
  10. 17. sequence of events involved in the development of a species
  11. 18. people who inhabit a territory or state
  12. 19. taxonomic group whose members can interbreed
Down
  1. 1. a scientific theory of the origin of species of plants and animals
  2. 2. group of genetically related organisms in a line of descent
  3. 3. immediate descendants of a person or organism
  4. 9. totality of surrounding conditions
  5. 12. process in which something passes to a different stage
  6. 13. process of being or becoming different
  7. 14. the act of making copies
  8. 15. a change or alteration in form or qualities