Explain how an unbalanced translocation occurs and how it affects humans.

Answer:

An unbalanced translocation is a type of chromosomal abnormality in which the genetic material is rearranged such that some regions are duplicated or missing. This can occur when a child inherits chromosomes from a parent who carries a balanced translocation, resulting in the child having extra or missing genetic material, and different proportions of chromosome arms. There can also be Robertsonian translocations. Symptoms can include fertility issues, Down syndrome, birth defects of the heart and learning difficulties.