Question

what is down 's syndrome ? give it's symptoms and cause​

Answer 1

Answer:

$\bf{ \red{ \large{down \: syndrome}}}$

• Down syndrome is a common congenital chromosomal anomaly which is found worldwide.
• The condition occurs when there is one extra copy of chromosome 21 in cells in the body.
• The extra chromosome 21 material may affect the physical development and learning abilities of people with Down syndrome.

$\bf{ \green{symptoms}}$

Flat palm,low IQ, severe retardation,always open mouth,congenital heart disease etc.