Trisomy 21 is a genetic disorder that occurs when a patient has three copies of chromosome 21 in each cell. Which mutation would MOST likely result in a similar phenotype as trisomy 21? A.
inversion of the distal portion of chromosome 21

B.
duplication of the distal portion of chromosome 21

C.
insertion of the distal portion of chromosome 21 to chromosome 5

D.
translocation of the distal portion of chromosome 21 to chromosome 5

Astudent sees several ants walking up a wall following the exact same trail that an ant took earlier. she wants to apply the scientific method to determine how the ants detected the trail. which of these steps would come first in her application of the scientific method? perform an experiment by cleaning the scent away from part of the trail. draw a conclusion that the ants follow a scent trail. make a prediction about what the ants will do after she cleans away part of the trail. hypothesize that the ants are following a scent trail that the first ant left.