Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Science

What is the twenty first chromosome?


Chromosome 21 is one of the 23 pairs of chromosomes in humans. Most people have two copies of chromosome 21, while those with three copies of chromosome 21 have Down syndrome.

{{ relativeTimeResolver(1575255772993) }}

LIVE
Points points 51
Rating

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE