CK-12 Foundation
Ck 12: Biology: Probability and Inheritance
[Free Registration/Login may be required to access all resource tools.] Discusses the role of probability in inheritance.
CK-12 Foundation
Ck 12: Biology: Mendel's Laws and Genetics
[Free Registration/Login may be required to access all resource tools.] Describes genotype and phenotype, and how genes are inherited.