A baby is born with what the primary care provider believes is a diagnosis of trisomy 21. this means that the infant has three number 21 chromosomes. what factor describes this genetic change?

The baby is diagnosed with trisomy 21 as she has three number 21 chromosomes. This genetic change is described by the factor of the baby having non disjunction during the process of meiosis. This condition of trisomy 21 is also called as Down syndrome.