Determine the diploid number (2n) of the following unknown organisms from the cell observations given below. Draw what each cell looks like at the indicated stage, including all important cytological features.

a. 6 tetrads at metaphase I
b. 8 pair of sister chromatids in one of the two cells at anaphase II
c. 7 chromosomes within one gamete

If you could do the drawings somehow it would help out a lot.
I think the 2n numbers are
a) 2(6)= 12
b) 2(8)= 16 If this isn’t correct could you please explain why
c) 2(7)= 14 If this isn’t correct could you please explain why