You end up with a polyploid condition. Not uncommon in organisms, especially plants, like angiosperms.
Look up "polyploidy".
Since enzymes function as organic catalysts, a cell would not be able achieve homeostasis if the required enzymes were not present.
C. The green part, because it contains chlorophyll
the answer is C. decreased variation in tail feather color because no form of the trait is advantageous.
CT scans. I hope this is the answer you're looking for