Through a combination of observation and mathematical estimation, scientists can evaluate the amount of genetic variation in different populations. Upon doing so, they can then analyze differences in ...

Our genes are inherited from our parents, and the different combinations of these genes make us unique. Genetic inheritance controls the characteristics of all living things. This short video explains ...

Colleen Laurich recently was a junior high science teacher and is now a first-grade teacher. Cathy Neiheisel is technology director and a computer teacher at Divine Infant Jesus School in Westchester, ...