Yes, chromosomes have Watson and Crick model. which looks like a spiral ladder.
Though shaped like a spiral ladder it consists of two helical polymers if it was to be unwound. On the outside of the ladder is phosphate and sugars, and in the middle are the bases associated in pairs, one base coming from one helical strand and one from the opposite helical strand.
spiral chains
The DNA molecule is shaped like an extremely long ladder twisted into a helix, similar in appearance to the shape of a spiral stairway.
it's actally a spiral ladder or a double helix and there is no good reson
An elliptical galaxy is round. A spiral galaxy is shaped like a spiral.
An elliptical galaxy is round. A spiral galaxy is shaped like a spiral.
The leaves are spiral shaped
They are shaped like a spiral.
spiral chains
It is spiral shaped like a snail
The milky way galaxy is spiral shaped, it has two arms that spiral around the center, and it has a bulge in the middle.
DNA molecule is shaped like a spiral staircase and is composed of two parallel strands of linked subunits.