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Found Karyotype 8 times.

Displaying results 1 to 10.

1. Fragile X syndrome
Fragile X syndrome is characterized by mental retardation, autistic-like behavior and other physical abnormalities. Though it is usually most severe/more common in males (they are more susceptible because they have only one X chromosome whereas females have two), both males and females can be affected and their karyotype shows a gap (the fragile site) on the long arm of the X chromosome.

2. Idiogram
A diagram of a karyotype , which shows the number, sizes, and shapes of each chromosome in the cell .

3. Karyoevolution
Evolutionary change in the chromosome set , expressed as changes in number and gross structure of the chromosomes; (more broadly), evolutionary relationships between taxa as indicated by karyotype differences.

4. Karyotype (adj. karyotypic)
A karyotype is a photomicrograph of an individual's chromosome s arranged in a standard format showing the number, size, and shape of each chromosome type. Each chromosome is characterized by the length of its arms and the location of its centromere, which appears as an indentation or a lightly stained region. Staining methods may result in banding on the chromosomal arms (chromatids); chromosomes can then be identified according to their banding pattern. karyotypes are used in low-resolution physical mapping to correlate chromosomal abnormalities with the characteristics of specific diseases.

5. Karyotype
The chromosomal characteristics of a cell; also, a representation of the chromosomes aligned in pairs.

6. Klinefelter syndrome (XXY trisomy)
A genetic syndrome in many mammals caused by the presence of an extra X chromosome in the male (normally XY) karyotype . In humans, this syndrome is characterized by small testes, feminine appearance, sterility (except in the case of genetic mosaics) and possibly mental retardation. In domestic cats, male calicos always have this genetic condition.

7. Q banding
Q banding is a method of identifying chromosome s in a karyotype that have abnormalities by staining the chromosomes with quinacrine dye. When the chromosomes are viewed with a fluorescent microscope after this treatment, unique patterns of fluorescent bands are seen with each chromosome.

8. Turner's syndrome (X0, gonadal disgenesis, Bonnevie-Ullrich syndrome, ovarian dwarfism, pterygolymphangiectasia, Turner-Varny Syndrome)
A rare genetic disorder (roughly one in every 2,500 liveborn females are affected) caused by the lack of one X chromosome in human females which results in an X0 karyotype instead of the normal XX karyotype. The condition was first described in 1938 by H.H. Turner. Females with this syndrome have normal intelligence (though they may have some learning difficulties in regard to math and spatial relationships), abnormally short stature, retarded/incomplete sexual development and infertility. They may also suffer from heart defects, kidney defects, thyroid problems, hearing loss, and may have other physical abnormalities. The "classic" physical symptoms of Turner's include puffy hands and feet soon after birth, webbing of the neck, unusually broad chest, and small nipples. The severity of the disorder may vary widely from person to person, because many females may be "genetic mosaics": during the course of their early embryonic development, one or more of their differentiating cells lost an X chromosome so that when they were born, some of their cells were missing an X, but the other cells in their bodies were perfectly normal. Presumably, a woman or girl with a higher number of XX cells than X0 cells would have a much less severe version of the syndrome than a woman or girl who was born with the X0 karyotype throughout all the cells in her body. Infants with the syndrome may have difficulty feeding (due to hard palate deformities) and may show "failure to thrive." Girls with Turner's may experience a partial-to-complete lack of sexual development at puberty; they can be treated with female hormones (estrogen) that can help them develop breasts and other secondary sexual characteristics. Growth hormones treatments are used to improve the girls' heigh (the success of this treatment varies).

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