Why Is The Lagging Strand Synthesized In A Discontinuous Fashion

The lagging strand is synthesized in a discontinuous fashion because DNA polymerase can only synthesize DNA in the 5′ to 3′ direction. This means that the lagging strand is synthesized in short segments, called Okazaki fragments. The Okazaki fragments are then joined together by DNA ligase.

Semidiscontinuous DNA replication

During DNA replication, the two strands of the double helix are separated and each serves as a template for the synthesis of a new complementary strand. Because DNA polymerase can only add nucleotides to the 3′ end of a nucleotide chain, synthesis of the leading strand proceeds in a continuous fashion from the 5′ end to the 3′ end. Synthesis of the lagging strand, however, proceeds in a discontinuous fashion.

One reason for this is that DNA polymerase can only synthesize a short stretch of DNA before it must release the template strand and reattach to the 3′ end of the newly synthesized strand. This process is known as “priming” and it requires the action of a special enzyme, DNA primase. Another reason for the discontinuous synthesis of the lagging strand is that the DNA polymerase must “read” the template strand in the 3′ to 5′ direction.

This means that it is synthesis the new strand in the 5′ to 3′ direction. As a result, the lagging strand is synthesized in fragments that are later joined together by another enzyme, DNA ligase.

Why is the lagging strand synthesized in a discontinuous fashion quizlet

The lagging strand is synthesized in a discontinuous fashion because it is being synthesized in the opposite direction as the leading strand. The lagging strand is also much longer than the leading strand, so it would be much more difficult to synthesize it in a continuous fashion.

What are the fragments called which occur on the discontinuous strand?

When a DNA strand is cut, the resulting fragments are called “discontinuous strands.”

Why is dna synthesis continuous on one strand and discontinuous on the opposite strand

DNA replication is the process of copying a double-stranded DNA molecule. This process is semi-conservative, meaning that each new double-stranded DNA molecule contains one strand from the original DNA molecule and one newly synthesized strand. DNA replication is continuous on the leading strand, which is the strand that is oriented in the same direction as the movement of the replication fork.

DNA replication is discontinuous on the lagging strand, which is the strand that is oriented in the opposite direction as the replication fork. The lagging strand is synthesized in short segments called Okazaki fragments.

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What initiates the synthesis dna

The synthesis of DNA is initiated by the binding of the enzyme RNA polymerase to a promoter region of the DNA. This initiates the synthesis of a new DNA strand complementary to the template strand.

Initiates the synthesis dna by creating a short rna segment

Initiating the synthesis of DNA by creating a short RNA segment is an important process in the cell. This process is known as transcription. Transcription is the first step in the process of DNA replication.

Transcription occurs in the nucleus of the cell. The DNA strand that is being copied is called the template strand. The RNA strand that is created is called the complementary strand.

The RNA strand is complementary to the template strand. The RNA strand is made up of nucleotides. The RNA strand is made up of a sugar and a phosphate group.

The RNA strand is made up of the nitrogenous bases A, C, G, and U. The RNA polymerase enzyme initiates the synthesis of DNA by binding to the template strand. The RNA polymerase enzyme unwinds the double helix of the DNA strand.

The RNA polymerase enzyme then uses the template strand as a template to synthesize the complementary RNA strand. The RNA polymerase enzyme then separates the RNA strand from the template strand. The RNA polymerase enzyme then joins the RNA strand to the DNA strand.

why is the lagging strand synthesized in a discontinuous fashion

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Why half of the DNA is replicated in a discontinuous fashion?

Discontinuous replication is a type of replication where the DNA is copied in short, separate segments. This is opposed to continuous replication, where the DNA is copied in one long, uninterrupted strand. There are several reasons why discontinuous replication might occur.

One possibility is that it is simply more efficient. Copying DNA in short segments requires less energy than copying it in one long strand. Additionally, it may be easier for the replication machinery to handle shorter segments of DNA.

Another possibility is that discontinuous replication provides a way to deal with damaged DNA. If there is a break in a DNA strand, discontinuous replication allows the replication process to bypass the damage and continue copying the rest of the DNA. Discontinuous replication is also thought to play a role in the development of cancer.

Cancer cells often have damaged DNA, and discontinuous replication may allow them to continue replicating despite the damage. Additionally, cancer cells often have high levels of a protein called telomerase, which helps to maintain the ends of DNA strands. This may allow cancer cells to continue replicating indefinitely, as they are able to quickly repair any DNA damage that occurs.

Overall, discontinuous replication is a complex process that is not fully understood. However, it is clear that it plays an important role in DNA replication and in the development of cancer.

Why the lagging strand is not formed continuously?

During DNA replication, the two strands of the double helix are separated and each serves as a template for the formation of a new complementary strand. Because the two strands are antiparallel, replication proceeds in opposite directions on the template strands. One strand, the leading strand, is replicated continuously in the 5′→3′ direction.

The other strand, the lagging strand, is replicated in short segments in the 3′→5′ direction. The lagging strand is not formed continuously because the DNA polymerase enzyme can only synthesize DNA in the 5′→3′ direction. As the DNA polymerase moves along the template strand in the 3′→5′ direction, it synthesizes the new complementary strand in the 5′→3′ direction.

This results in the formation of short segments of DNA, called Okazaki fragments, that are later joined together by DNA ligase.

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Why does the leading strand in DNA replication continuous and the lagging strand discontinuous?

In DNA replication, the leading strand is continuous and the lagging strand is discontinuous. The leading strand is made up of the template strand and the newly synthesized strand. The lagging strand is made up of the newly synthesized strand and the template strand.

The leading strand is continuous because it is being made from the template strand. The lagging strand is discontinuous because it is being made from the newly synthesized strand.

Is lagging strand continuous or discontinuous?

Lagging strand is discontinuous. It is made up of Okazaki fragments. The lagging strand is the newly made DNA strand that is complementary to the template strand.

It is called the lagging strand because it is made in short pieces. The leading strand is continuous because it is made in one long piece. It is called the leading strand because it is made in the direction that the DNA replication fork is moving.

Both strands are made by the DNA polymerase. The leading strand is made by the DNA polymerase going in the direction of the replication fork. The lagging strand is made by the DNA polymerase going in the opposite direction of the replication fork.

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Conclusion

The lagging strand is synthesized in a discontinuous fashion because the DNA polymerase enzyme can only add nucleotides to the 3′ end of the growing strand. This means that the lagging strand is synthesized in short segments, called Okazaki fragments, which are later joined together by DNA ligase. The leading strand, on the other hand, is synthesized continuously because DNA polymerase can add nucleotides to the 5′ end of the growing strand.

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