Achromosome-transmitted form of intellectual disability caused by the presence of an extra copy of chromosome 21 is called what?

Down syndrome

Explanation:

Down syndrome, also known as Trisomy 21 is characterized by an extra copy of chromosome on its position 21 seen as XXY.

This results in cognitive development coupled with intellectual and delayed physical growth

slitherio is the original. its the best friend of all middle schoolers. the man you can count any time you have some free time. slitherio is the guy you hang with while you're in the computer lab suppose to be doing "research or whatever". slitherio isn't just a game but a friend.

wormaxio is just a fake trying to squeeze its way into the friend group. trying to pretend its cool and your best pal but how long has it really been there for you, really. it only wants you as friend to boost its social status. wormaxio is just annoying fake pleb. no offense

you and have a wonderful day

i think its control and coordinate because im pretty sure thats what tissue does and the joints are what control movement and then your skeletal/ bones provides portection. hope that .