Molecular Biology Techniques

Let's match each item: A. Alfred Hershey and Martha Chase are famous for their experiment which confirmed that DNA is the genetic material. Thus, A matches with IV.
B. Euchromatin is a form of chromatin that is loosely packed and light-stained, allowing easier transcription and gene expression. Thus, B matches with III.
C. Frederick Griffith is known for his experiment on Streptococcus pneumoniae, where he demonstrated the transformation principle. Thus, C matches with I.
D. Heterochromatin is tightly packed and dark-stained chromatin that is typically inactive in gene expression. Thus, D matches with II. Thus, the correct answer is A-IV, B-III, C-I, D-II.