Across
- 3. the movement of genetic material between populations
- 6. the preserved remains or traces of past life
- 10. refers to the differences in characteristics
- 12. relies on one parent and produces genetically identical offspring
- 13. the process where two or more related species become increasingly dissimilar over time
- 14. where a single cell divides into two identical daughter cells
- 16. have a nucleus and other membrane-bound organelles
- 18. lack a nucleus and membrane-bound organelles
- 19. occurs when a population's size is drastically reduced, leading to a loss of genetic diversity
- 20. resistance to antibiotics
Down
- 1. single-celled, microscopic organisms lacking a membrane-bound nucleus
- 2. reciprocal evolutionary changes brought about by interactions between species
- 4. branch of biology that studies the formation and growth of embryo
- 5. a random fluctuation in the frequency of gene variants
- 7. involves two parents resulting in offspring with unique combinations of traits
- 8. the complete disappearance of a species from Earth
- 9. is a specific version of a gene
- 11. change by which an organism or species becomes better suited to its environment.
- 15. a significant reduction in genetic diversity that occurs when a small group of individuals establishes a new population
- 17. where new species arise from a single ancestral species