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Karyotype

Definition

noun, plural: karyotypes

(genetics) The characterization of the chromosome complement of a species (such as the shape, type, number, etc. of chromosomes).

verb

To arrange and classify the chromosome complement of an organism based on the number, size, shape, and other characteristics of the chromosomes.


Supplement

The karyotype of an organism is usually displayed in photomicrographs wherein chromosomes are arranged in homologous pairs, and in descending order of size and relative position of the centromere.

Karyotype is used to study chromosomal aberrations, cellular function, or taxonomic relationships, or to gather information about past evolutionary events.


Related forms: karyotypical (adjective), karyotyping (verb: present participle), karyotyped (verb: simple past).


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Colorblindness Probability Help!

The incidence of an XXY karyotype is about 1 in every 1000 male births, the extra X chromosome coming either from the mother's egg or the father's sperm by nondisjunction during meiosis. Suppose the baby's father has red-green colorblindness. ...

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by kaylagh
Sun Sep 07, 2014 6:07 am
 
Forum: Genetics
Topic: Colorblindness Probability Help!
Replies: 0
Views: 48

Genetics (dihybrid cross and Punnet sqares)

... Colorblindness (both Sex linked) and man who is NORMAL for both traits. I know that I have to set up two Punnet squares, and I also know that the karyotype for the male is X^(HC) Y. assuming H-normal and h-hemophilia, and C-normal and c-Colorblindness. However, I cannot figure out what the karyotypes ...

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by vbangel114
Wed Feb 15, 2012 3:15 am
 
Forum: Genetics
Topic: Genetics (dihybrid cross and Punnet sqares)
Replies: 1
Views: 2010

genotype marriage

I know in the UK that for couples needing IVF if there is a genetic risk that the couple may produce affected offspring due to their karyotype or if they have a proportion of genetically abnormal gametes then pre-implantation genetic diagnosis (PGD) can be performed on an early stage embryo ...

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by Kezzer
Sat Jan 08, 2011 10:20 am
 
Forum: General Discussion
Topic: genotype marriage
Replies: 3
Views: 10056

How would you confirm extra chromosomal inheritance ?

You mean having extra chromosomes (like some trisomy) or having the info on non-chromosomal DNA? Maybe in mitochondria? For the first case look for karyotype, for the second for the inheritance pattern. It would also help, if you wrote organism (at least prokaryota/eukaryota, multi/unicellular)

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by JackBean
Tue May 18, 2010 9:31 am
 
Forum: Genetics
Topic: How would you confirm extra chromosomal inheritance ?
Replies: 3
Views: 4004

Biology HW help

... groups in humans Save Answer 20. Week 7 Q.20 (Points: 5) Which of the following terms is least related to the others ? 1. epistasis 2. pedigree 3. karyotype 4. chorionic villus sampling (X) 5. amniocentesis Save Answer

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by sharingan23
Fri Feb 26, 2010 9:09 am
 
Forum: Genetics
Topic: Biology HW help
Replies: 1
Views: 13854
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