In later chapters,you will learn more about the regulation of gene expression.One way to regulate gene expression is to make changes to the histone proteins to alter how tightly the DNA is coiled and wrapped.The more tightly coiled and wrapped a particular region of DNA is,the less likely it is that the genes in that region will be expressed.Bearing this in mind,how tightly do you think regions of heterochromatin are compacted?
A)Very tightly
B)Moderately
C)Loosely
D)Not at all

Question

Quizplus · Accepted Answer

Regions of heterochromatin are known to be heavily compacted due to the presence of highly condensed chromatin structures. This prevents access of transcription machinery to the genes that lie within the heterochromatin region, resulting in their suppression or silencing.

In Later Chapters,you Will Learn More About the Regulation of Gene