Discover answers to your most pressing questions at Westonci.ca, the ultimate Q&A platform that connects you with expert solutions. Our Q&A platform provides quick and trustworthy answers to your questions from experienced professionals in different areas of expertise. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

A person with trisomy 21 has an extra copy of chromosome 21. What happened during meiosis that caused the person to get three copies of chromosome 21 instead of two copies? a) nondisjunction b) genetic recombination c) crossing-over d) binary fission