With DNA in its "relaxed" state, a strand usually circles the axis of the double helix once every 10.4 base pairs, but if the DNA is twisted the strands become more tightly or more loosely wound.. 
Nítorípé igi Brasil ṣe dá aró pupa, ó níyì yínyín ní Europe láti fi kún aṣọ, ohun sì ni ajẹ́ àkọ́kọ́ tó wúlò lati Brasil.. 