Statement 1: Heterochromatin is characterized by tightly packed chromatin and low gene expression.
Statement 2: Histone acetylation is associated with increased gene expression.
Both statements 1 and 2 are correct.
Statement 1 is correct but statement 2 is incorrect.
Statement 1 is incorrect but statement 2 is correct.
Both statements 1 and 2 are incorrect.
Heterochromatin is a tightly packed form of chromatin that is associated with low gene expression, while euchromatin is a more loosely packed form of chromatin that is associated with high gene expression. Histone acetylation is a modification that can loosen the chromatin structure and increase the accessibility of DNA to transcription factors, leading to increased gene expression. Therefore, statement 1 and 2 are both correct. Hence option 1 is the correct answer.