Chapter 12

2. No physical barriers and populations of a species that inhabit the same geographical region
5. Similar to a Zebra with concentrated stripes pattern
8. Substances that destroy or inhabit growth of microorganisms
10. Preserved remains of an organism
13. Structures that inherited body parts which are smaller and often unused
16. Molecules that help build and repair body parts
17. Describes the development of new species
18. Refer to an organism in its early stages of development
19. Portion of an existing population becomes totally isolated because of a geographical barrier
20. Members of the group that later gave rise to modern humans

1. The movement of genes from one generation to next
3. Population moves from its present habitat to a new one
4. Located in the chromosomes and made up of DNA
6. Similar functions but have different anatomy
7. Cells that give rise to sperm and eggs
9. Refer to any change in genetic composition of populations of organisms over time
11. A population of organisms that share similar characteristics, is interbreed, and offspring are equally fertile
12. Have vestigial bind leg bones
14. When some numbers of a species are suddenly separated from the rest
15. Similar structures that evolved from the same ancestral body parts