Answer:
Two normal cells, n and n;
One cell lacks chromosomes : n-n
One cell contain extra set of chromosomes: n+n=2n
Step-by-step explanation:
If all of the chromosomes experience non-dis-junction in meiosis II, means that sister chromatids failed to separate during meiosis II then
a. half the cells are normal containing n number of chromosomes (n).
b. One cell lacks whole set of chromosomes
c. and one cell with two copies of the chromosomes (n+n).