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Histone proteins form the support structure for the DNA in a chromosome. They help package and organize the long DNA strand into a more compact structure, which is necessary for proper cell division and gene expression.
Molecular structure of a chromosome
chromosome
yes
Down's Syndrome is an example of a birth defect characterized by an abnormality of the chromosome structure.
A single molecule of DNA consists of a double helix structure made up of nucleotides. Associated proteins, such as histones, help package and organize the DNA into chromatin. Together, the DNA and proteins form chromosomes within the nucleus of a cell.
DNA is packaged into a chromosome by wrapping around proteins called histones, forming a structure known as chromatin. This chromatin then coils and condenses to create the compact structure of a chromosome.
chromosome
A chromosome
The chromosome
Sense 1: structure organize, organise, coordinate
At the beginning of cell division, DNA and the proteins associated with the DNA coil into a structure called a chromosome. Chromosomes are visible under a microscope and contain the genetic material (DNA) of an organism.