A type of hereditary pattern seen when there is more than one genetic factor and, sometimes, environmental influence. Many common traits and many common diseases are multifactorial. Skin color, for example, is multifactorially determined, as is intelligence. Type 2 diabetes is multifactorial because it is due to inherited (genetic) factors but may also require environmental factors, such as obesity, to develop.
- Inheritance, mitochondrial
- Inheritance, mendelian
The manner in which genes and traits are passed from parents to their children. The four modes of Mendelian inheritance are autosomal dominant, autosomal recessive, X-linked dominant and X-linked recessive. The term “mendelian” refers to the great Austrian biologist Gregor Mendel (1822-84) who formulated the laws forming the foundation of classical genetics. Mendel was a […]
- Intracytoplasmic sperm injection (ICSI)
A test-tube fertilization procedure in which a sperm is injected directly into an egg to achieve fertilization. ICSI is done for male infertility. Babies conceived by ICSI have no more major birth defects or delays in development than children conceived by natural means.
In the skin. For example, an intradermal injection is given into the skin. Abbreviated ID.
- Intradiskal electrothermal therapy
A procedure designed to relieve back pain due to damage to the disks between the spine bones. Called IDET for short. Under local anesthesia and X-ray guidance, a needle is introduced into the disk and a catheter with a heating coil is inserted through the needle. The tip of the catheter is then gradually heated […]