Final answer:
D) Epigenetics is the concept not associated with differences in the number of copies of DNA sequences, unlike CNV, Polymorphism, and Haploinsufficiency that are related to DNA copy number or structure variations.
Step-by-step explanation:
The concept that is NOT associated with differences in the number of copies of particular DNA sequences is Epigenetics. Copy Number Variation (CNV), Polymorphism, and Haploinsufficiency are all concepts that are directly related to the number or structure of DNA copies.
CNV involves an increase or decrease in the copies of a section of DNA; Polymorphism, such as Single Nucleotide Polymorphisms (SNPs), refers to genetic variations among individuals; Haploinsufficiency occurs when a single copy of a gene is not sufficient to produce a functional product. In contrast, Epigenetics deals with heritable changes in gene expression that do not involve alterations to the underlying DNA sequence.