chromosome mutations and cell division

[biologyisgreat]

I want to ask if chromosome mutations occur in both mitosis and meiosis.
And if a chromosome mutation covers the gene, does this mean that this case is also a gene mutation?
chromosome mutations can be deletion, duplication, inversion or translocation

[JackBean]

what do you mean by chromosome mutations? Crossing-over?

[david23]

do you mean during mitosis and meiosis or prior to them.