The cultural makeup of the u. s. population has changed over the past few years because of immigration and other factors. such long-term changes in the genetic and cultural makeup of a population are part of?

Normative history-graded influences.

Explanation:

Normative history-graded influences are events that affect the majority of the people in a community making a change in their culture. Inmigration is a factor that changes a culture because it introduces new traditions, points of view, objects, etc. Another thing that can make a normative history-graded influence is when people from the United States have children with inmigrants or inmigrants' descendants because they are modifying the DNA of a population that has certain characteristics

that would be called plucking : )

explanation:

''plucking, also referred to as quarrying, is a glacial phenomenon that is responsible for the erosion and transportation of individual pieces of bedrock, especially large "joint blocks". as a glacier moves down a valley, friction causes the basal ice of the glacier to melt and infiltrate joints (cracks) in the bedrock."

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'