Across
- 4. A random change in the genetic code produced by a mistake in the copying practise
- 7. Evolution below the species level
- 10. The death of the last member of a species
- 11. A set of trails expressed by an individual
- 12. The number of species in a given area
- 14. Evolution that gives rise to new species gnera families classes and organsim
- 15. The complete set of genes in an individual trials type
Down
- 1. A change in the genetic composition of a population as a result of descending from a small number of colonizing individuals
- 2. A trait that improves an individual's fitness
- 3. a reduction in the gentic diversity of a population caused by a reduction in its size
- 5. A physical location on the chromosomes within each cell of an organism
- 6. An individual's ability to survive and reproduce
- 8. a change in the genetic composition of a population over time as a result of random mating
- 9. A change in the genetic composition of a population over time
- 13. The branching pattern of evolutionary relationships