Isodisomy


A remarkable situation in which both chromosomes in a pair are from one parent only. Isodisomy causes some birth defects and is suspected to play a role in cancer. Also known as uniparental disomy.

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    A type of plant estrogen (phytoestrogen) found chiefly in soybeans.

  • Isoform

    A protein that has the same function as another protein but which is encoded by a different gene and may have small differences in its sequence. For example, transforming factor beta (TGF-B) exists in three versions, or isoforms (TGF-B1, TGF-B2, and TGF-B3), each of which can set off a signaling cascade that starts in the […]

  • Isolate

    To separate from others as during an infectious disease.

  • Isometric exercise

    Exercise involving muscular contractions without movement of the involved parts of the body. Isometric exercise is one method of muscular exercise. In contrast, isotonic exercise occurs when a contracting muscle shortens against a constant load, as when lifting a weight. Isometric comes from the Greek “iso-“, equal + “metron”, measure = maintaining the same measure, […]

  • Isometropia

    iso- (equal) + -metr- (measure) + -opia (vision). Literally, the measure of vision is equal. The opposite of isometropia is anisometropia in which the two eyes have unequal refractive powers. Anisometropia is a serious concern in newborns and young children because it can lead to amblyopia (impaired vision in one eye). With a major degree […]


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