Q: Given a scientific passage and an answer, generate a question for the given answer.
Passage: Some children are born with genetic defects that are not carried by a single gene. Instead, an error in a larger part of the chromosome or even in an entire chromosome causes the disorder. Usually the error happens when the egg or sperm is forming. Having extra chromosomes or damaged chromosomes can cause disorders. Answer: disorders
A:
Having extra chromosomes or damaged chromosomes can cause what?