Why, is there evidence that the SIR 2 gene wasn't present in ancient humans?
Over time, due to sin, genetics deteriorated and shortened our life spans.
Genes don't just deteriorate. Mutations can be benificial or detrimental - and genetic complexity can increase in subsequent generations.
There's no evidence here of accidental improvement in life span.
Accidental, no. Do to better health practices, nutrition, sanitation, vaccinations, etc. our lifespan is longer than at any time in recorded history.
Why, is there evidence that the SIR 2 gene wasn't present in ancient humans?
I would be interested if the SIR 2 gene is also present in the chimpanzee. If it is, maybe it's God's way of indicating that ID is bunk and Evo is the path to knowledge. Just a thought.
Why, yes. I recently concluded a complete DNA analysis of both Adam and Eve, and there is evidence that the "SIR 2" gene was a mutation resulting from an apple they'd eaten that had some really nasty toxins in it.
The SIR 2 gene allowed them to live, but their life became butal, nasty, and short.
HAND
The bible record has longer lifespans. But then you reject some recorded history.