What are chromatin strands composed of?

Chromatin strands are primarily composed of DNA and proteins. This structure is fundamental to the organization of genetic material within the nucleus of eukaryotic cells. The DNA in chromatin is wrapped around histone proteins, which help to compress and organize the DNA into a compact form, allowing it to fit within the nucleus while still being accessible for processes such as transcription and replication. This protein-DNA complex is crucial for regulating gene expression and maintaining the integrity of the genome.

Proteins play multiple roles in chromatin, including structural support and facilitation of interactions with other molecules involved in DNA processes. Therefore, understanding that chromatin consists of both DNA and proteins highlights the complexity and functionality of genomic organization in cells.