Final answer:
Segregation during gamete formation produces parental or noncrossover gametes with the original genetic combinations found in the parents, without any crossing-over event.
Step-by-step explanation:
The phenomenon being described is known as segregation during gamete formation. In this scenario, homologous chromosomes separate without any crossing-over or genetic exchange occurring. As a result, the gametes produced carry the original combinations of genes, similar to those found in the parents, known as parental or noncrossover gametes. This produces two types of gametes that reflect the genetic combinations of the individual's parents.