[Free Registration/Login may be required to access all resource tools.] Some children are born with genetic defects that are not carried by a single gene. Instead, an error in a larger part of the chromosome or even in an entire...

[Free Registration/Login may be required to access all resource tools.] Discusses how mutation or abnormal numbers of chromosomes result in genetic disorders.

A good way to review facts related to sex chromosome abnormalities. Use these helpful flashcards for a test review.

Learn about disorders caused by a deletion of DNA from one of the chromosomes. This article explains causes, inheritance, symptoms, diagnosis, and treatment of Cri-du-Chat Syndrome and Williams Syndrome.

Find out about aneuploidy and nondisjunction, as they relate to down syndrome and other related disorders. Also learn about chromosomal rearrangements.

[Free Registration/Login may be required to access all resource tools.] Discusses how mutation or abnormal numbers of chromosomes result in genetic disorders.

Read this passage and study the graphics to complete the five-question quiz concerning the inheritance of immunodeficiency disorders.

This site contains thorough information on Kabuki Syndrome, a rare genetic chromosomal disorder. The table of contents begins with facts about Kabuki Syndrome and contains excellent information on Kabuki. Also available in Italiano.

Learn about some human genetic disorders.

Read this passage and study the graphic to complete the five-question quiz related to the Chronic myelogenous leukemia and Philadelphia Chromosome.

Only a few types of aneuploidy are compatible with life. Use this drop-down menu to understand more about common genetic disorders resulting from monoploidy and polyploidy, such as Down Syndrome. Learn features of the disorder, see how...

Find out about the chromosomal basis of sex determination, X and Y chromosomes, and X-linkage.

[Free Registration/Login may be required to access all resource tools.] Some human genetic disorders are also X-linked or Y-linked, which means the faulty gene is carried on these sex chromosomes. Other genetic disorders are carried on...

Presents information about human chromosomes, their structure, and genetic disorders that can result from mutations.

Play the role of a scientist and piece together the genetic puzzle to determine the gene responsible for a disorder.

Follow a series of chromosome problem scenarios to learn about several genetic disorders. Test your knowledge with a quiz at the end of the exercise.

If you want an interactive way to practice karyotyping, this is it. There are three patient histories and karyotypes to use in diagnosing human genetic disorders. There is enough information on comparing chromosomes to get you started.

Get an in-depth look at the importance of DNA with this library of information on nucleic acid structure and function. Understand the structure and function of DNA by exploring topics in the chemical structure of DNA, organization of DNA...

A general overview of what Chromosome 15, Distal Trisomy 15q is, along with a list of synonyms for its name.

Fact page describes the genetic disorder Triple X Syndrome or Trisomy X. Includes explanation of the genetics involved as well as treatment of the disorder.

Fact page describes Triple X Syndrome or Trisomy X. Includes explanation of the genetics involved and treatment of the disorder.

Gives facts about Rett Syndrome, one of the five specific Pervasive Developmental Disorders. The concise details include a definition, stages of the disorder, causes, diagnosis, treatment, and research. To access this page in Spanish:...

This comprehensive study guide covers the main terms and concepts needed for a unit on human inheritance.

A large collection of lesson and labs developed by high school biology teachers. Lesson plans cover the topics of Drosophila, population genetics, gene, molecular genetics, chromosomes, genetic disease, genetic counseling, and bioethics....