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Karyotype


karyotype
the size, shape, and general appearance of the chromosomes in mitotic metaphase
Source: Jenkins, John B. 1990. Human Genetics, 2nd Edition. New York: Harper & Row ...
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Karyotypes are arranged with the short arm of the chromosome on top, and the long arm on the bottom. Some karyotypes will designate the short and long arms as p and q, respectively.
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Karyotype
Karyogram of human female
A karyotype is the complete set of all chromosomes of a cell of any living organism. The chromosomes are arranged and displayed (often on a photo) in a standard format: in pairs, ordered by size.
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Karyotype of a Normal Human Male
To prepare this display, a photograph of metaphase chromosomes (dyads) was cut into pieces and the individual images assembled in homologous pairs.
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Karyotype.
Microscopic examination of chromosome size and banding patterns allows medical laboratories to identify and arrange each of the 24 different chromosomes (22 pairs of autosomes and one pair of sex chromosomes) into a karyotype, ...
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Dr. Fabio Candotti of the National Human Genome Research Institute's, Clinical Gene Therapy Branch, defines karyotype.
illustrated:
View illustration ...
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Karyotypes can be used to determine if there is an abnormality in chromosome number or structure.
Nondisjunction
Nondisjunction occurs when chromosomes fail to "disjoin" during meiosis or mitosis.
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karyotype The chromosomal characteristics of a cell; also, a representation of the chromosomes aligned in pairs. PICTURE
keratin A ?brous protein that ?lls mature keratinocytes near the skin's surface.
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karyotype
(kar-ee-oh-type) [Gk. kara, the head + typos, stamp or print]
A method of organizing the chromosomes of a cell in relation to number, size, and type.
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Karyotype: A photomicrograph of an individual's chromosomes arranged in a standard format showing the number, size, and shape of each chromo some type.
Mapping: See gene mapping, physical map.
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Male intersexuals (karyotype 46XY) (also called male pseudohermaphrodites) have normal testes with female or ambiguous genitalia. They most often result from several different genetic alterations in pathways of testosterone synthesis and metabolism.
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(See Selectable marker.) Karyotype. All of the chromosomes in a cell or an individual organism, visible through a microsope during cell division. L Lag phase.
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An arrayed set of banded chromosomes is called a karyotype and can be used to screen for chromosome rearrangements.
G-, Q-, and R- bandings are not observed with plant chromosomes.
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A photograph or diagram of the chromosomes of a cell arranged in an orderly fashion. See karyotype.
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z ...
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X and Y chromosomes in organisms that determine the sex of an individual. In human beings females have two X chromosomes in diploid cells; males have an X and a Y chromosome. The sex chromosomes comprise the 23rd chromosome pair in a human karyotype.
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They also found statistically significant premating isolation between the WH population and the field populations. Finally, the Woods Hole population showed slightly different karyotypes from the field populations.
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Karyotype -- a set of photographed, banded chromosomes arranged in order from largest to smallest. Lligase -- an enzyme that functions in DNA repair.
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