Across
- 7. is a mechanism by which individuals that have inherited beneficial adaptations produce more offspring on average than do other individuals
- 8. encompasses all changes in the characteristic of life on earth
- 9. heritable differences will exist in every population
- 10. group of organism that can reproduce have fertile offspring
Down
- 1. is the ability of a trait to be passed down
- 2. structures derived from a common ancestral structure are called
- 3. difference in physical trait individuals in the same group
- 4. is the measure of survival and ability to produce offspring
- 5. structures
- 6. one variation of a trait may be better suited for survival