At each replication fork, one new strand of dna is made as one continuous piece. what is this strand of dna called?

The correct answer is:

The "leading" strand.  

Explanation:

When replication occurs, the two parent DNA strands are withdrawn. One of these is represented as the leading strand, and it is replicated continuously in the 3' to 5' direction. In DNA replication, the strand that is performed in the 5' to 3' orientation by continuous polymerization at the 3' growing tip.

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step 1: initiation

initiation is the beginning of transcription. it occurs when the enzyme rna polymerase binds to a region of a gene called the promoter. this signals the dna to unwind so the enzyme can ‘‘read’’ the bases in one of the dna strands. the enzyme is now ready to make a strand of mrna with a complementary sequence of bases.

step 2: elongation

elongation is the addition of nucleotides to the mrna strand. rna polymerase reads the unwound dna strand and builds the mrna molecule, using complementary base pairs. there is a brief time during this process when the newly formed rna is bound to the unwound dna. during this process, an adenine (a) in the dna binds to an uracil (u) in the rna.

step 3: termination

termination is the ending of transcription, and occurs when rna polymerase crosses a stop (termination) sequence in the gene. the mrna strand is complete, and it detaches from dna.