Biology

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Across
  1. 3. factor where changes in a habitat affect the organism's survival
  2. 5. different looking species can have similar internal systems
  3. 6. force that causes a specific phenotype to be more advantageous
  4. 11. factor where differences between organisms of the same species
  5. 16. factor where there is a difference in genes passed on to new generations
  6. 17. the letters that represent a trait
  7. 18. factor species produces more offspring than can survive
  8. 20. varian in dna
  9. 21. factor where members of a species fight for same supplies
  10. 22. still present but no longer used (goosebumps)
  11. 24. one dominant and one recessive allele
  12. 25. the ability for organisms with more advantages to be able to reproduce more
Down
  1. 1. advantage that organism has that is developed overtime
  2. 2. tool to determine a common ancestor
  3. 4. have the same functions but arent from a common ancestor
  4. 7. the theory that organisms with more advantageous traits are more likely to survive
  5. 8. the visible trait that comes from the genotype
  6. 9. the genetic formation that contains genetic instructions for organisms
  7. 10. shows how the same species evolved over time and developed better traits
  8. 12. sections of dna that code for specific traits
  9. 13. different forms of the same gene
  10. 14. a characteristic of an organism
  11. 15. have different functions but come from a common ancestor
  12. 19. a way to visualize possible genotypes of the offspring
  13. 23. a change in a species over a long period of time