Question

identify which scientist or group of scientists was responsible for making each of the following discoveries.
the double - helix structure of dna:
the chemical composition of protein
the monomer of nucleic acids:

Explanation:

• Watson, Crick, and Franklin: They are known for their work on determining the double - helix structure of DNA. Watson and Crick built the model of the DNA double helix, while Franklin's X - ray crystallography data was crucial.
• Mulder: He was involved in early studies related to proteins.
• Levene: He identified the monomer of nucleic acids (nucleotides).

Answer:

• The double - helix structure of DNA: Watson, Crick, and Franklin
• The chemical composition of protein: Mulder
• The monomer of nucleic acids: Levene