Across
- 3. a procedure that causes changes in the genetic makeup of a community throughout time
- 6. is passed down through generations by physical or behavioral characteristics which helps an organism's fitness or survival
- 8. individuals of a species share characteristics, but they are rarely equal, there's a distinction between them
- 10. ancient species' preserved parts or evidence of past remains
- 11. a section of DNA molecule that codes for one trait
- 12. an organism that has two identical alleles for a particular gene
- 13. a thing obtained or perhaps inherited
Down
- 1. Selection: when an organism adapts to its environment to better survive
- 2. any change in the sequence of a cell
- 4. Evolution: when two species become similar as they adapt to the same environment
- 5. Structure: structures between two different organisms that are similar but have different function
- 7. different forms of a gene
- 9. a distinctive feature of a particular individual
- 14. having two different alleles for a trait