Unit 4 Vocab- Part B

1234567891011121314151617181920
Across
  1. 2. preserved remains of once living organisms whos bodies were buried in sediments, ancient seas, lakes, rivers, etc.
  2. 6. how reproductively successful an organism is in its environment
  3. 7. a heritable traits that increases an individual’s fitness
  4. 9. the process by which traits that improve an organisms chances for survival and reproduction
  5. 11. a sequence of DNA that codes for particular traits
  6. 16. occurs when mismatches in mating traits prevent mating between two species/populations
  7. 17. the physical separation of members of a species
  8. 18. the disappearance of a species on Earth
  9. 19. features of different species that are similar in function but not necessarily in structure ; not from ancestors
  10. 20. physical compatibility between reproductive organs of two organisms
Down
  1. 1. similar physical features in organisms that share a common ancestor, but the features serve completely different functions.
  2. 3. the separation of groups as a result of changes in their ecology or in the environment in which they live
  3. 4. the process in which two or more populations of an ancestral species accumulate independent genetic changes (mutations) through time
  4. 5. changes in DNA
  5. 8. when two populations differ in their periods of activity or reproductive cycles
  6. 10. the process of selection conducted under human directions
  7. 12. new species are generated
  8. 13. biological evolution that occurs by chance
  9. 14. structures that have no apparent function and appear to be residual parts from a past ancestor
  10. 15. change over time