Using black and white construction paper, evolutionary biologists simulate the classic peppered moth study. They use beans in a frequency and natural selection exercise. Finally, they analyze germinated seeds for variations. All three...

In this biology learning exercise, 9th graders create one chromosome using a red plasticine and another using blue plasticine. Then they illustrate different ways of crossing over, including double crossovers. Students also explain...

This interactive tutorial is about Morgan and his studies with fruit flies. Basic knowledge about genetics is important before trying this one.

This site will allow students to grasp the complex concept of meiosis by modeling the process with clay.

Describes some mechanisms in reference to the choosing of a mate. Both selection processes of males and of females are described. Discusses group sexual selection models and nonsexual selection models.

[Free Registration/Login may be required to access all resource tools.] Discusses linked genes and why some characteristics are inherited together.

Discusses how sexual reproduction leads to genetic variation. [Free Registration/Login may be required to access all resource tools.]

In this tutorial students will learn how meiosis reduces chromosome number by half and become familiar with crossing over, meiosis I, meiosis II, and genetic variation.

[Free Registration/Login may be required to access all resource tools.] Discusses linked genes and why some characteristics are inherited together.

Ten meiosis problems to solve.

This site provides both illustrations and text to compare and contrast the stages of mitosis with meiosis.

This biology game assesses understanding of "crossing over", "independent fertilization", and "random fertilization" in the study of genetics.