The answer to the given question above would be FOUR. The number of copies of a DNA molecule that results from two replications of a single DNA molecule is FOUR. Since there are two replications, this makes the DNA molecule four. Hope this answers your question.
I am thinking of of strawberry runners, also called stolons:
these an a sort of extrernal connections between the particular plants, which can be used to grow new plants, as when the end of one such stem finds an appropriate place in the ground and sprouts roots there.
Do you think you might have needed a different kind of adaptation?
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There's a bunch of examples.
For example, hairlines. A widow's peak is a dominant trait over a straigh hairline.
Or dominant hand type. Right hands are dominated over left hands.
Or hair types. Curly hair dominates straight hair.
If you google it, you'll get a lot more examples.
The answer is cnidaria
hope this helps :)