What does the bold mean? What is the effect of those 2 on morality and how do they relate to your usage of the species?
To my understanding, it means that an individual may sacrifice their own survivability for the group/tribe out of a feeling of kinship. So the "GEC" genetics/experience/culture of the group/tribe gets passed on as long as the group continues to be successful enough.
Socially, the group approves of certain behaviors. This approval in an individual increases the attractiveness one sees in a potential mate. Again providing a greater change of these behaviors to continue to be propagated.