Evolution
Across
- 4. a graph that shows evolutionary relationships between species
- 9. type of genetic drift that causes an organism to become first to a new area
- 12. reproductive ______ is the factors that affect organisms breeding
- 13. _____ Selection - attraction to traits that may or may not have advantage
- 15. _______ isolation affects reproduction based on time
- 16. variations of a trait
- 18. Changes in DNA and the root cause for evolution
- 20. Evidence that shows all life starts very similarly
- 22. collection of alleles of a trait in the population
- 23. Change in traits of a population over a long time leading to new species
- 25. Studying preserved remains shows how organisms' traits changed over time
- 26. a trait that gives an advantage in a certain environment
Down
- 1. ______ Selection - humans breed organisms to exemplify desirable traits
- 2. ______ Selection - survival of the fittest
- 3. Father of evolution, came up with the theory of natural selection
- 5. A random event causes organisms to move areas against their will
- 6. ______ Structures - unused leftover traits that an ancestor used
- 7. _______ isolation affects reproduction based on actions of the organisms
- 8. ______ Structures - came from a common ancestor, same structures
- 10. Allele _________ is how often a trait shows up in the population
- 11. a characteristic of an organism
- 14. modern technology allows use to study the genetic sequences and see changes between species
- 17. ______ Structures - different structures but provide same function, independently evolved
- 19. ______ isolation affects reproduction based on location
- 21. Migration - organisms moving area changing allele frequencies
- 24. type of genetic drift that causes much of the population to die off changing allele frequencies