Question

what happens to centioles durning mitosis?

Answer 1

Protein spindles form on the centrioles which move to opposite poles in the cell.
(I will skip the whole process and talk only about the centrioles)
These spindles attach themselves to one side on the chromosome with extreme precision and the spindles on the opposite centriole, attaches itself to the other half.
The chromosomes are brought to the centre of the cell.
Then a cellular, tug-of-war occurs as many other spindles push against each other and the centrioles are repelled against each other.
Hence, the chromosomes are split into two.

Answer 2

Good work.