3-chromosomes-on-21

Best Results From Yahoo Answers


From Yahoo Answers

Question:Which of the following describes her expected phenotype? A) Normal female B) Enlarged genital structures C) Masculine characteristics such as facial hair D) Excessive emotional instability E) Sterile female

Answers:A) Normal female. X chromosomes are inactivated except one per cell.

Question:FYI, for those of you saying it is Down Syndrome, you are incorrect. Down syndrome is when an third chromosome 21 is present. :]

Answers:Downs is caused by an extra chromosome. Not and extra X. Klinefelter syndrome is caused by the presence of one or more extra copies of the X chromosome in a male's cells. Extra genetic material from the X chromosome interferes with male sexual development, preventing the testicles from functioning normally and reducing the levels of testosterone. Typically, males with Klinefelter syndrome have one extra copy of the X chromosome in each cell, for a total of two X chromosomes and one Y chromosome (47,XXY). Less commonly, affected males may have two or three extra X chromosomes (48,XXXY or 49,XXXXY) or extra copies of both the X and Y chromosomes (48,XXYY) in each cell. The extra genetic material may lead to mental retardation and other medical problems. Klinefelter syndrome can also result from an extra X chromosome in only some of the body's cells. These cases are called mosaic 46,XY/47,XXY. Triple X syndrome (also called 47,XXX or trisomy X): This syndrome results from an extra copy of the X chromosome in each of a female's cells. Females with trisomy X have three X chromosomes, for a total of 47 chromosomes per cell. The average IQ of females with this syndrome is 90, while the average IQ of their normal siblings is 100 [1]. Their stature on average is taller than for normal females. They are fertile and their children do not inherit the condition. [2] Females with more than one extra copy of the X chromosome (48,XXXX or 49,XXXXX) have been identified, but these conditions are rare. The extra genetic material may lead to mental retardation and other medical problems.

Question:I'm not asking about gene mutations. I'd like to know the cause of such chromosome aberrations like heteroploidy and the structural abnormalities. What makes a person prone to these aberrations. Or any theories regarding its cause. please post links. thank you!

Answers:I know they can be inherited if a parent has a Robertsonian translocation, age is also a factor ect. Maybe these links will help? I did a report on chromosomal translocation/trisomy 21 about a year ago for school and these were some of my sources. http://www.ncbi.nlm.nih.gov/entrez/dispomim.cgi?id=190685 from the OMIM website. My genetics' teacher really liked this website. http://www.ds-health.com/trisomy.htm http://www.krepublishers.com/02-Journals/IJHG/IJHG-06-0-000-000-2006-Web/IJHG-06-4-281-361-2006-Abst-PDF/IJHG-06-4-291-295-2006-264-Cyrus-C/IJHG-06-4-291-295-2006-264-Cyrus-C-Text.pdf You could also look at the CDC website. The link I used for my report is no longer available, but you could do a general search for chromosomal translocation or chromosome nondisjunction on the web or OMIM ect. http://www.cdc.gov/ http://www.ncbi.nlm.nih.gov/omim/ http://www.ncbi.nlm.nih.gov/ http://www.google.com/search?hl=enl&hs=S6r&q=chromosome+nondisjunction&aq=f&oq=&aqi= http://www.google.com/search?hl=en&q=chromosomal+translocation&aq=0&oq=chromosomal+transloc&aqi=g10


From Youtube

CHROMOSOMES by DAVID CRONENBERG - the exhibition

David Cronenberg and Thierry Fremaux talking about Chromosome Exhibition for Rome Film Fest 2008. 70 images chosen and processed by David Cronenberg starting with original film frames from his most famous movies: The Fly, Videodrome, The Dead Zone, Dead Ringers, Naked Lunch, Crash, Spider, and the recent Eastern Promises. The images were taken directly from the 35mm prints at the Centro Sperimentale di Cinematografia in Rome through innovative digital techniques, after which they were processed following the precise indications of the author and finally printed on 80x100 cm canvasses. The exhibition, curated by Domenico De Gaetano and Luca Massimo Barbero, was completed by two 10-minute videos with famous sequences from Cronenberg's movies and a bilingual catalogue. One room was entirely dedicated to the installation Red Cars, in homage to the Ferrari, based on the artbook that was realized in 2005 and on rare archival footage. Rome, October 21 - November 16, 2008

Human Chromosome 2

Humans have 23 pairs of chromosomes, the great apes have 24. Here I try to give a simple explanation of the fusion of two ancestral great ape chromosomes (something that only occurred in humans) to form human chromosome 2. Spare me, biologists if I butchered it. It's that journalism trait of having to boil down complicated information. Here is Biologist Ken Miller's explanation (much better than mine lol) www.youtube.com

Chromosome Sonic Project Episode 3

I wonder if they will make it to this party or not?Will Sonic Save Mighty?!

Chromosome Disorder Outreach Video 3

This video was created for CDO by Austin's grandpa, who is a professional video producer who donated his services at no cost to us. Like our previous videos, this video shows photos of children affected by rare chromosome disorders. Chromosome Disorder Outreach, Inc., is a non-profit organization that provides information and support to individuals dealing with rare chromosome disorders. Please visit our website to learn more: www.chromodisorder.org


Warning: mysql_close(): supplied argument is not a valid MySQL-Link resource in /edu-source/cbsenext/cfw/index.php on line 550