What type of mutation causes a change in the number of chromosomes?

Chromosome mutations can result in changes in the number of chromosomes in a  cell  or changes in the structure of a chromosome. Unlike a  gene mutation  which alters a single gene or larger segment of  DNA  on a chromosome, chromosome mutations change and impact the entire chromosome. Key Takeaways: Chromosome Mutations

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )