(03.06 HC)
Down syndrome is a genetic disorder that is also called trisomy 21. A person with Down
Syndrome has an extra copy of chromosome 21. What can you infer is most likely the geneti
mutation that results in Down syndrome? (4 points)
a Nondisjunction during meiosis
b
C
d
Complete duplication of chromosomes during polyploidy
Translocation during genetic replication
Crossing over during meiosis?
