Answer :
Chromosomes and linkage groups are 2 fragments of DNA ordered in decreasing size that represent tightly coiled strands of DNA.
What is DNA?
Deoxyribonucleic acid (DNA) is the genetic material that all organism uses to transmit hereditary characteristics.
DNA is a double helix molecule composed of two long chains of nucleotides linked via hydrogen bonds.
In eukaryotic cells, DNA is associated with histone proteins, which make it a tightly coiled molecule.
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