Please post my quote making that claim.
Since you can't do that, you can apologise for making it up out of whole cloth or simply slink away from whre ever you slink to.
--This would be the scientific definition. Science has been knind enough to allow us to quantify this definition by sequencing the genome which leaves anti-science nuts gaping for air and defining humans as you do above.--
This implies that 'it' is human if it contains the human DNA sequence. Since we were referring to a single cell, you are implying that the definition of human is extended to a single cell if it contains the human DNA sequence.