its a complete sentence.
The DNA molecules resembles a twisted step ladder
Erm, sentence fragment! It is always the same shape, it just phases. This is when the earth is blocking the sunlight from getting to the moon, and so shadows fall on it, making it appear to change shape. Please learn some grammar.
Common clovers have a trefoil shape. I'm going to need more practice tying this trefoil knot.
shape
Odo from DS9 is a shape-shifter.
A rhombus is a quadrilateral shape and is similar to the shape of a square.
An irregular shape is like, when the shape has no even sides.
That's going to depend on the shape of the shape.
The shape of the hill suggested that the north face was very steep.
There are times when the world seems to be in pretty rough shape.
The adverb in this sentence is frequently.
Come on, its very easy! The shape hexapod is a 6 sided shape.