Respuesta :
Histones serve as structural proteins. Histones are encircled by DNA, which gives chromosomes their structure. Histones can be changed by adding or removing chemical groups like methyl or acetyl groups.
What protein helps a chromosome maintain its structural integrity?
A chromosome's structural support is provided by a protein called a histone. Each chromosome has a long DNA molecule that must fit into the cell nucleus. By wrapping around histone protein complexes, the DNA achieves this and gives the chromosome a more compact shape.
Who or what is responsible for suppressing gene expression?
Posttranscriptional gene silencing (PTGS) and transcriptional gene silencing (TGS) both work to degrade already-existing RNA. Although the outcomes are comparable, TGS's processes are species-specific, as are PTGS. De novo DNA methylation is connected to gene silencing in the majority of eukaryotes.
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