The process by which a person acquires political culture and values is known as

The answer to this question is  political socialization
 political socialization happens during the lifelong period and will create a certain value/principles that will influence that person in his/her political affiliation. The political socialization will be heavily affected by families, media, peer groups, etc.

It is meant that like tapestry scientific theories often need to pull out since they are not relevant and often times the whole chain of theories may be pulled out.