Therefore “Adam and Eve” were Image Bearers.
And according to Genesis 2 and 3 they were aware of what is good and what is bad, and therefore accountable.
To this discussion Genesis 5:1-3 is crucial.
Putting together Genesis 1:26-27; 2:15-17, 3, 5:1-3, 6:1-4, 9:5-6 we are led to the following account:
In a first moment God makes two things:
Defines humanity by declaring that he makes human-kind in his own image and his own likeness.
Gives to some human Image Bearers “knowledge of good and bad”, who thereby become accountable.
Thereafter, till the Flood, God creates new accountable Image Bearers in two ways:
As offspring of the primeval Image Bearers.
Directly, like he created the first accountable Image Bearer “Adam”: These are the “sons of God” in Genesis 6:2-4, who became accountable when marrying into the lineage of Adamite humans.
Nonetheless at the time of the Flood there are millions of Image Bearers who are NOT accountable all over the earth.
Genesis 9:5-6 is the moment when God completes the creation of humanity by making all Image Bearers accountable. Hence, the universal “taboo on murder”.
Two final points:
“Genetic or Genealogical Adam” is a strong symbol aiming to highlight the fraternity of all humans. Nonetheless in the light of Evolution we understand today that we are human because we are Image Bearers and share a body like the body of the Son of God, and NOT because we are genealogically descended from Adam&Eve. This is also the meaning of the “rainbow” in Genesis 9:13-16 (see a similar parable in the last Urbi et Orbi Address by Pope Francis).
It is fitting to assume that the first accountable Image Bearers (“Adam and Eve”) were created in a state of grace comparable to that we receive through baptism.