What is true about lagging strand during dna replication a. it has the same sequence as the leading strand b. it contains okazaki fragments c. it is synthesized before leading strandd. it is synthesized in the 5 to 3 direction

Correct It contains okazaki fragments

During DNA replication two strand is formed one is called leading strand and another is called as lagging strand. Leading strand is said to be parent strand and it replicate in 3'-5' direction, while lagging strand replicate discontinuously in 5'-3' direction.

Lagging strand is one of the two strand which is found in the DNA, which replicates discontinuously in the form of short section. These sections are called as okazaki fragments.

Okazaki fragments found in eukaryotes are in the size range of 1000 to 2000 nucleotides and in prokaryotes it is 100 to 200 nucleotides long.

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.