Which of the following terms describes the dna-protein complexes that look like beads on a string? a) 30-nanometer fiber b) histones c) nucleosome d) chromatin

Ans.

Beads on a string structure shows DNA molecule, which wraps around histone proteins. This structure is known as chromatin. The histone molecules are supposed as beads and DNA molecule represents a string, thus known as beads on string structure.

It plays an important role in DNA packaging as it folds very long molecules of DNA into a dense, compact form that can fit into a small nucleus or cell.

Hence, the correct answer is option d.

nucleosomes

Explanation:

the answer is not chromatin I can assure you that

option c is the correct answer.

the fossil record provides evidence of a common ancestor to many species.