An animated pedigree clearly explains the way hemophilia was inherited in the Romanov family. Interpreting pedigrees and sex-linked crosses should be much easier to understand after going through this tutorial.

This site, provided by The University of Arizona, gives a good set of genetics problems that involve sex-linked genes. Great to review what you know! Links are provided to access the various subjects covered in this problem set.

A tutorial reviews polygenic and multiple alleles, Punnett Square, sex-linked trait, and inheritance patterns. Follow the slides to ensure comprehension of inheritance.

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

The basic principles of genetics are in this effective site. Gender determination, recessive traits, and the Punnet Square are the topics examined. There is also a Punnet Square practice exercise to assess your comprehension of the...

Thomas Hunt Morgan will explain the research he did to determine that some traits are linked to the sex of an individual.

This resource provides extensive information about genetic interactions.

This problem set is based on a question received from a woman with red-green color blind as well as other members of her family. She wanted to know if we could help her understand how she inherited her color blindness.