What structures are involved in the formation of chromatin ?

sc RNA is involved in formation of

Kreb's cycle involves the formation of

Trophoblast is not involved in the formation of

Hormone involved in the formation of winter buds

Which moieties of nucleosides are involved in the formation of phosphodiester linkage present in dinucleotides? What does the word diester in the name of linkage indicate? Which acid is involved in the formation of this linkage?