Why genetics

Students fulfilling the requirements of the Area of Concentration in Genetics will receive a note on their official transcript. Amy Bejsovec, Department of Biology phone: e-mail: bejsovec duke. Dong, X. Sherwood, N. Sherwood, Spana, Strader, Sun, Volkan. The following courses are required for students pursuing both the B. A worldwide research project called The Human Genome Project created a map of all human genes. It shows where the genes are located on the chromosomes. Doctors can use this map to find and treat or cure some kinds of genetic disorders.

There is hope that treatments for many genetic disorders will be developed in the future. Reviewed by: Amy W. Anzilotti, MD. Larger text size Large text size Regular text size. What Is Genetics?

Single gene disorders can be autosomal or X-linked. For example, sickle cell disease is an autosomal single gene disorder. It is caused by a mutation in a gene found on chromosome Sickle cell disease causes anemia and other complications. Fragile X syndrome , on the other hand, is an X-linked single gene disorder.

It is caused by a change in a gene on the X chromosome. It is the most common known cause of intellectual disability and developmental disability that can be inherited passed from one generation to the next. People usually have 23 pairs of chromosomes. But, sometimes a person is born with a different number. Having an extra chromosome is called trisomy. Missing a chromosome is called monosomy.

For example, people with Down syndrome have an extra copy of chromosome Some disorders are caused by having a different number of sex chromosomes. For example, people with Turner syndrome external icon usually have only one sex chromosome, an X. Women with Turner syndrome can have problems with growth and heart defects. Sometimes chromosomes are incomplete or shaped differently than usual.

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