MEDCHROME:MEDICAL AND HEALTH ARTICLES

Articles in: Genetic defects

Home » Archive » Genetic defects

Down Syndrome or Trisomy 21: Chromosomal disorder

Down Syndrome or Trisomy 21: Chromosomal disorder

Trisomy 21 or  Down Syndrome was first described by John Langdon Hayden Down a Physician ( 1828-1896 AD) in The London Hospital in 1866 AD.In 1959, Lejeune and Jacobs et al independently determined -trisomy 21 as cause of Down Syndrome.
Karyotype-

Trisomy 21: 47 XX or XY +21 . Usually caused by an extra copy of Chromosome 21
Translocational …

Get Updates

Subscribe Via Email

Enter Your Email To Subscribe

Top Contributors

Dr. Binit Vaidya
aakriti
Jms S Mhn
drsaurav
Sulav Shrestha
drbibek

Log In

BMI Calculator



Check your Body Mass Index »

RSS Medical Videos

Recent Comments

Relevant links

Medchrome Info

"A physician who is a lover of wisdom is the equal to a god." - Hippocrates

Medchrome offers medical students, physicians and other health professionals an easy access to medical information and education materials. It also includes simplified health articles for readers interested in health and well being.

Some of the key features of Medchrome:
Medical cases, Picture galleries, Presentations, Health and Medical Videos, Mnemonics, Medical Student life and Ebooks.

Medchrome - Blogged online medical magazine, usmle, mbbs, nepal Bloggers - Meet Millions of Bloggers Submit my blog General-Health