+ 1 > The first level of DNA compaction occurs at the nucleosome.

+ 2 > The chromosome, containing the genetic information, consists of a single DNA molecule.

+ 3 > Cyca Revoluta, also known as Japanese Cyca, is a pan-chronic species belonging to an order of gymnosperms (Cycadales). Once very diverse, it appeared in the Carboniferous period, like the ferns

+ 4 >Antarctica, also known as the Southern Continent, is a territory south of 60° south latitude that is dedicated exclusively to scientific research. The Antarctic Treaty of 1959 and the Madrid Protocol of 1991 specify that it is forbidden to carry out any military or natural resource exploitation activities (except for scientific purposes).

+ 1 > Superposition of SMC (Structural Maintenance of Chromosomes) proteins. .

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