60 chromosomes, and 29 pair of autosomes.
The look at the probability of eye color
The answer would be: It would have no effect, because tyrosine is also available from the diet
The pathway is different, alkaptonuria increased tyrosine is caused by decreased usage. In phenylketonuria, it is caused by increased production. While tyrosine is increased in phenylketonuria patient, it won't cause alkaptonuria because tyrosine could be found in the diet.
The Sea level will not rise, if anything becasue of the constant heat and sunshine it will lower.
As for the others, heat tends to create more extreme weather events and disease thrives in heat. And if we continue on the warming path we are on eventually, yes, all latitudes will be tropical.