The extra chromosomes have duplicate genes on them. The “excessive number of copies of correct genes” is the hypothesis for why it is bad.
Theoretically a new chromosome with new cellular firmware codes genes that turn off the legacy genes being overwritten. If you had an advanced enough understanding of biology and advanced tools and advanced testing methods you could do this. It would look nothing like today.
The extra chromosomes have duplicate genes on them. The “excessive number of copies of correct genes” is the hypothesis for why it is bad.
Theoretically a new chromosome with new cellular firmware codes genes that turn off the legacy genes being overwritten. If you had an advanced enough understanding of biology and advanced tools and advanced testing methods you could do this. It would look nothing like today.