You are presented with the question "What is a DNA strand?" and the following answer choices: 
- more abundant
 - Plant reproduction
 - keeping the dog warm
 - flow of electrons
 - Something to move
 - fertile
 - Polynucleotide
 - negative

Now knowing that many nucleotides bind together to form a chain called a polynucleotide and dNA strands are long polynucleotide chains, choose the best answer.


 

       Polynucleotide  