What is the primary difference between euchromatin and heterochromatin?

• A. Euchromatin is more condensed and silences genes, while heterochromatin is less condensed and allows gene expression.
• B. Euchromatin is less condensed and allows gene expression, while heterochromatin is more condensed and generally silences genes.
• C. Euchromatin is found only in telomeres, while heterochromatin is found only in centromeres.
• D. Euchromatin and heterochromatin have the same level of condensation but differ in gene expression.

Answer: (B)