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no DNA synthesis occurs in 5'-3' as well as in 3'-5' direction. only the difference is that ,that it is continuous in 5'-3' direction but discontinous in 3'-5' direction. this is because enzyme DNA polymerase III can synthesize DNA contionously in 5'-3' direction only.


No DNA synthesis always occus in the 5' to 3' direction as there is no DNA polymerase that work in the other direction as it is too thermodynamically unfavourable. The cells solve the problem of having to synthesize in a 3' to 5' direction by synthesizing in reverse in discontinuous pieces. Technically there's never any direct 3' to 5' synthesis.



DNA polymerase can add nucleotide to 3' end of primer or growing strand of DNA so in one direction it remains continuous ie leading strand while in in other strand it starts little later when it get enough space to grow in opposite direction then after synthesizing short strand it again goes to newly unwind strand and repeats the process, but the growth remains in 5' to 3' direction moving on template from 3' to 5' direction.

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โˆ™ 2011-09-12 21:53:54
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Q: DNA synthesis occurs only in 5'-3' direction.?
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Related questions

When does Dna synthesis occur?

Within the Cell cycle, Dna synthesis occurs during the S [synthesis] phase.

What is DNA synthesis?

Synthesis means creation. Therefore DNA synthesis is the creation (or copying) of DNA. This occurs before cells divide in order to create copies of the DNA.

Synthesis of DNA?

it occurs in the Prophase

When the DNA synthesis occurs?


DNA synthesis occurs in what phase?


What phase does DNA synthesis occurs?


When does doubling of DNA occur?

The doubling of DNA (known as DNA synthesis or DNA replication) occurs during the "S (synthesis) phase" of the cell cycle. This is part of interphase, and occurs before mitosis (cell division).

What is the direction of synthesis of the new strand?

The direction of synthesis of the new strand would be in the 5'-3' direction because DNA polymerase can add free nucleotides to only the 3' end of the newly forming strand.

DNA synthesis occurs during this stage-?

DNA synthesis refers to the creation of new DNA molecules. It takes place during the synthesis phase (S Phase) of cell reproduction.

The elongation of the leading strand during DNA synthesis?

progresses away from the replication fork.

What phase does the DNA synthesis occurs?

replication of DNA takes place during the interphase

What is the name of the process that ensures that DNA is duplicated?

synthesis, which occurs during the synthesis phase in interphase

What is the relationship between dna in the nucleus and the synthesis of proteins in the cytoplasm?

DNA is the blueprint for making cell proteins. The synthesis of the proteins in the cytoplasm occurs according to the instructions in the DNA.

What happends before mitosis occurs?

DNA synthesis and its replication

What is a type of RNA that copies the coded message from the DNA in the nucleus and carries the message into the cytoplasm?

Transcription is the synthesis of RNA under the direction of DNA. The type of RNA used during transcription is the messenger RNA. The mRNA carries a genetic message from the DNA to the protein-synthesizing machinery of the cell. Then, translation is the actual synthesis of a polypeptide, which occurs under the direction of mRNA.

In nondividing cells DNA synthesis occurs?

no. the purpose of dna synthesis is to ensure transmission of genetic material to new daughter cells.

In what stage of mitosis does DNA synthesis occur?

DNA synthesis occurs during the S phase of interphase. Interphase is not a part of mitosis.

Does DNA synthesis occur during interphase or mitosis?

Replication of chromosomes only occurs during S phase of interphase.

DNA synthesis occurs?

During S phase of cell cycle

What occurs during the S phase?

Duplication of chromosomes and DNA synthesis

What direction does DNA synthesis always proceed?


When does DNA copy itself?

DNA replication occurs in the S-phase of interphase ("s" meaning synthesis).

What happens during the S stage?

During the S stage DNA synthesis occurs. (copying of the DNA)

The stage of the cell cycle when DNA replication occurs is?

The "S" phase, during which protein synthesis occurs.

When does replication go through the cell cycle?

DNA replication occurs during the S stage of interphase. The S means synthesis and refers to the synthesis of new DNA during DNA replication.

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