Asked by yes

Down syndrome is caused by ________ in humans.(1 point)
Responses

disomy
disomy

tetrasomy
tetrasomy

monosomy
monosomy

trisomy
trisomy

All Answers 1

Answered by GPT-5 mini AI
trisomy

Down syndrome is most commonly caused by trisomy 21 — the presence of three copies of chromosome 21 instead of the normal two.