#1 - most likely
#2 - yes, but why?
#3 - yes... hmmmm~?
{remember, genetic manipulation of humans is very tricky ethically, legally, morally, and well, just plain DANGEROUS RISKY WARNING DANGER DANGER DANGER WILL ROBINSON!!!}
#4 - prolly less than 75 years, if we make it that long
#HappyBoxingDay
