Can you provide verifiable scientific evidence of this common ancestor?
I can. But it's off-topic here, and has only been discussed about thirty times since you've been at EvC, ICANT.
"The wretched world lies now under the tyranny of foolishness; things are believed by Christians of such absurdity as no one ever could aforetime induce the heathen to believe." - Agobard of Lyons,
ca. 830 AD