Explanation: Chromatin consists of single dsDNA in a coiled and condensed form which is an organized structure of DNA and proteins.

Explanation: Centromere is the region in the eukaryotic chromosome where kinetochore is assembled and sister chromatids are held together. In some cases, centromere can also be located at the end of the chromosomes.

Explanation: Less stained and less condensed portion of chromatin is euchromatin while a darkly stained and highly condensed region of chromatin is heterochromatin.

Explanation: T-loop is found at the end of the chromosome or at the telomere region. It is responsible for the stability of the chromosomal ends.

Explanation: Replicon is the unit of replication, which consists of its own origin of replication. Single chromatin has more than one replicon.

Explanation: In G0 phase of non-dividing cells DNA exists as chromatin while in M-phase chromatin is converted to chromosome which is more condensed.

Explanation: Nucleosome is the first level of DNA packing structure which is composed of beads-on-a-string structure. R.Kornberg in 1974 described the basic structure of chromatin.

Explanation: Protamine is a polypeptide basically composed of arginine and is present instead of histones in the sperm of fish and some other organisms.

Explanation: SMC stands for structural maintenance of chromosome protein, which maintained condensed structure of chromosomes.

Explanation: There are some chemical modification and structural changes take place in histones during replication and transcription called histone modification.