Question

What is the structure called when DNA is wound up around histones and forms a structure that looks like a beaded string?

1) Nucleosome
2) Chromatin
3) Centromere
4) Telomere

Answer 1

A nucleosome is the structure formed when DNA wraps around histones and creates a beaded string-like structure. It allows for compact packaging of DNA in the nucleus.

Step-by-step explanation:

The structure that forms when DNA is wound up around histones and forms a structure that looks like a beaded string is called a nucleosome. In eukaryotes, DNA is wrapped around proteins called histones to form nucleosomes, which consist of a core of eight histone proteins around which DNA is tightly wrapped. The nucleosomes resemble beads on a string, where the DNA is the string and the histones are the beads. This organization allows for compact packaging of DNA inside the nucleus.