Imprinting, genomic
The phenomenon of parent-of-origin gene expression. The expression of a gene depends upon the parent who passed on the gene.
For instance, two different disorders – Prader-Willi syndrome and Angelman syndrome — are due to deletion of the same part of chromosome 15. When the deletion involves the chromosome 15 that came from the father, the child has Prader-Willi syndrome, but when the deletion involves the chromosome 15 that came from the mother, the child has Angelman syndrome.
Genomic imprinting plays a critical role in fetal growth and development. Imprinting is regulated by DNA methylation and chromatin structure.
Read Also:
- Imprinting, psychological
A remarkable phenomenon that occurs in animals, and theoretically in humans, in the first hours of life. The newborn creature bonds to the type of animals it meets at birth and begins to pattern its behavior after them. In humans, this is often called bonding, and it usually refers to the relationship between the newborn […]
- Impulsivity
Inclined to act on impulse rather than thought. People who are overly impulsive, seem unable to curb their immediate reactions or think before they act. As a result, they may blurt out answers to questions or inappropriate comments, or run into the street without looking. Their impulsivity may make it hard for a child to […]
- IMRT
Intensity modulated radiation therapy.
- Imbibe
1. To drink, often referring to alcoholic beverages in popular culture. 2. To absorb or take up fluid. From the Latin imbibere (to drink in) in the sense of consuming drink, absorbing liquids, and appropriating ideas.
- Imagery
Both a mental process (as in imagining) and a wide variety of procedures used in therapy to encourage changes in attitudes, behavior, or physiological reactions. As a mental process, it is often defined as “any thought representing a sensory quality.” It includes, as well as the visual, all the senses – aural, tactile, olfactory, proprioceptive, […]