Chromatin that consists of more condensed regions of mostly noncoding DNA are referred to as
A) nucleosomes.
B) histones.
C) heterochromatin.
D) euchromatin.

Question

Quizplus · Accepted Answer

Heterochromatin consists of highly condensed regions of mostly noncoding DNA, which are not frequently transcribed. It contains tightly packed nucleosomes and histones, making it difficult for transcription factors and RNA polymerase to access the DNA and initiate transcription.

Answer: D 
 Euchromatin is the less condensed and more transcriptionally active form of chromatin. It is characterized by more accessible nucleosomes and histones, allowing for easier access by transcription factors and RNA polymerase. Euchromatin contains mostly protein-coding DNA and is actively involved in gene expression.

Chromatin That Consists of More Condensed Regions of Mostly Noncoding