Variation and Selection

3. Continuous variation is controlled by ____ genes.
5. The Darwin's theory of evolution is known as ______ selection.
7. The proponent of the theory of survival of the fittest.
9. The type of variation that is easily distinguishable.
10. Part of DNA that encode the protein.
11. Type of recessive gene mutation with the absence of pigments in the skin.
13. The organisms' ability to survive against the changes.
14. The changes in the structure of a gene.
15. Process of formation of new species over time.
17. H_____, the example of continuous variation.

1. The differences in traits between individuals of the same species.
2. When the breeder cross different varieties of organism to produce a new and better variety.
4. The type of variation that is affected by the environment conditions.
6. This type of selection is done by humans to get superior characters.
8. The mutation in body cells is called as ____
10. The term to describe the gene that encode the traits.
12. The external agents that cause the mutation.
16. The term to describe the observable trait in organisms.