Question

In addition to highly repetitive and unique DNA sequences, a third category of DNA sequences exists. What is it called, and which types of elements are involved in it?

A) dominant DNA; euchromatin and heterochromatin
B) composite DNA; telomeres and heterochromatin
C) moderately repetitive DNA; SINEs, LINEs, and VNTRs
D) ribosome DNA; centromeres and heterochromatin
E) euchromatin DNA; hemoglobin and 5.05 RNA

Answer 1

The third category of DNA sequences is called moderately repetitive DNA, which includes elements like SINEs, LINEs, and VNTRs.

Step-by-step explanation:

The third category of DNA sequences in a eukaryotic genome, besides highly repetitive and unique sequences, is called moderately repetitive DNA. This category includes types of elements such as Short Interspersed Nuclear Elements (SINEs), Long Interspersed Nuclear Elements (LINEs), and Variable Number Tandem Repeats (VNTRs). These elements are usually found throughout the genome and can have various roles, such as regulating gene expression and increasing genetic diversity within a species.