Vocabulary Terms:

1. DNA: an essential part of all living matter and a basic material in the chromosomes of the cell. It carries the pattern of inherited characteristics.

2. Descendant: a person who comes from a certain ancestor.

3. Y chromosome: sex chromosome that contains genes that determine maleness.

4. Linkage: anything that is joined or connected

5. Ideology: the teachings, beliefs, or ideas of a person, group, etc.