In historical terms 'Race' relates to the original root racial group from which the present various ethnic sub-sets of that race derive.
The White Race no longer exist as a homogenous genetic racial group, as if a 'white racial group' still existed today then all the members of that white racial group would share the EXACT same genes as each other wherever the descendants of that original white racial group existed today.
All indigenous Europeans evolved from the original white racial group, but today we are differentiated from each other by having distinct genes that define us members of distinct White Ethnic groups.
The reality is that the original homogenous genetic group that was the original root White Racial group has evolved into the present White Ethnic groups which are the sub-sets of that original White Racial group.
Ethnic groups deriving from the White Racial group are differentiated from eath other both by Culture and by identifiable genetic markers.
Whilst an Ethnic group create cultures (Races do not produce a culture, as Races are defined by genetics not culture. The concept of a Race relates to a historical homogenous genetic entity from which contemporary ethnic groups derive) it is also true that a culture has a dramatic effect on an ethnic group.
A degenerate culture spawns a degenerate people.
For example - Communism, a cultural force, exterminated millions of indigenous Russian people and sought to eradicate ethnic differences and an ethnic consciousness in the Soviet Union.
Liberalism in the West, a cultural force, has propagandised race mixing and sought to destroy any ethnic and national cultural consciousness and therefore encouraged ethnic Britons to commit genetic suicide.
Therefore a culture created by an ethnic group can either be positive or negative - and impacts directly upon the genetic nature of the ethnic group that produces it.