It has been suggested that
- the human species may be undergoing an evolutionary transition in individuality (ETI). 
there is disagreement about 
- how to apply the ETI framework to our species
    - and whether culture is implicated 
        - as either cause or consequence. 
Long-term gene–culture coevolution (GCC) i- s 
    - also poorly understood.
argued that 
- culture steers human evolution, 
Others proposed 
- genes hold culture on a leash. 
After review of the literature and evidence on long-term GCC in humans
- emerge a set of common themes. 
    - First, culture appears to hold greater adaptive potential than genetic inheritance 
    - and is probably driving human evolution. 
        - The evolutionary impact of culture occurs 
        - mainly through culturally organized groups, 
            - which have come to dominate human affairs in recent millennia. 
    - Second, the role of culture appears to be growing, 
        - increasingly bypassing genetic evolution and weakening genetic adaptive potential. 
        -Taken together, these findings suggest that human long-term GCC is characterized by 
            - an evolutionary transition in inheritance 
            - from genes to culture
            - which entails a transition in individuality (from genetic individual to cultural group). 
Research on GCC should focus on the possibility of 
    - an ongoing transition in the human inheritance system.