trisomía 18

trisomía 18

A rare chromosomal abnormality in which there is a trisomy of chromosome 18. This inherited condition is also called Edward's syndrome. It is characterized by severe mental retardation, a small head with malformed ears set low, and a face with a pinched appearance. Other likely defects include a cleft palate, webbed hands, missing thumbs, clubfeet, as well as heart and genitourinary defects. Individuals with trisomy 18 usually die within a few months after birth.

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Κλάδος/Τομέας: Anthropology
Category: Physical anthropology
Company: Palomar College
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trisomía

Biology; Cell biology

A condition where a cell has an extra chromosome.

trisomía

Biology; Genome

Possessing three copies of a particular chromosome instead of the normal two copies. See also: cell, gene, gene expression, chromosome.

trisomía

Biology; General

A condition where a cell has an extra chromosome.

enfermedad endémica

Anthropology; Physical anthropology

A disease that remains at a more or less constant frequency of affected individuals in a population all of the time. Examples: hypertension, tooth decay, and malaria.

polimorfismo

Anthropology; Physical anthropology

A genetic trait controlled by more than one allele, each of which has a frequency of 1% or greater in the population gene pool. See balanced polymorphism.

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Anthropology; Physical anthropology

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modelo de asimilación

Anthropology; Physical anthropology

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potasio-argón

Anthropology; Physical anthropology

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pedernal

Anthropology; Physical anthropology

A kind of hard, rock with a glassy opaque appearance. It was a favorite raw material for many prehistoric humans for the manufacture of tools such as knives and scraping ...

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