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During DNA replication, why is it that t...

During DNA replication, why is it that the entire molecule does not open in one go? Explain replication fork. What are the two functions that the monomers (dNTPs) play ?

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### Step-by-Step Text Solution: **Step 1: Understanding DNA Replication** - DNA replication is a crucial process in which the DNA molecule is copied to ensure genetic information is passed on during cell division. It involves multiple enzymes and proteins working together in a complex manner. **Step 2: Why the Entire DNA Molecule Does Not Open at Once** - The entire DNA molecule does not open in one go due to the high energy requirement for such a process. Opening the entire double helix would demand a significant amount of energy, which is not feasible. Instead, the DNA strands are separated gradually. ...
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During DNA replication which of the following does not act as substrates?

Proteins that help to open up DNA helix in front of the replication fork in prokaryotes are

Explain the mechanism of DNA repication with the help of a replication fork. What role does the enzyme DNA-ligase play in a DNA replication fork ? OR Construct and label a transcription unit from which the RNA segment given below has been transcribed. Write the complete name of the enzyme that transcribed this RNA.

A 3' ______________ 5' B C 5' _______________ 3'D AB and CD represent two strands of a DNA molecule. When this molecule undergoes replication, forming a replication fork between A and C in the above. (i) Name the template strands for replication. (ii) Using which strand as the template, will there be continuous synthesis of a complementary DNA strand? (iii) Complementary to which strand will Okazaki segments get synthesised and discontinuous synthesis will occur (iv) What are template strands and Okazaki pieces? (v) In which direction is a new strand synthesized?

A dsDNA found in E. Coli has N^(15) labeled nitrogen bases. This organism was provided with N^(14) based nitrogen bases for the replication process . The two new DNA molecules synthesized after one round of replication in the N^14 based medium . describes about the comparison between parent DNA and daughter DNA ?

(a) Why does DNA replication occur in small replication forks and not in its entire length ? (b) why is DNA replication continuous and discontinuous in a replication fork ? (c) State the importance of origin of replication in a replication fork.

Why do you see two different types of replicating strands in the given DNA replication fork ? Explain. Name these strands.

Why do you see two different types of replicating strands in the given DNA replication fork? Explain . Name these starands.

Consider the following statements: (a) DNA is a long polymer of ribonucleotides (b) only one strand of DNA acts as a template for the synthesis of a new strand of DNA during replication (c) tRNA is also called adaptor molecule (d) DNA performs both autocatalytic and heterocatalytic functions. Which of the given statements are correct?

AB and CD represent two strands of a DNA molecule. When it undergoes replication, forming a replication fork between A and C: Name the template strand for replication.

NCERT EXEMPLAR ENGLISH-MOLECULAR BASIS INHERITANCE -Short Type Answer Questions
  1. Define a cistron. Giving examples differentiate between monocistronic ...

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  2. Give any six features of the human genome.

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  3. During DNA replication, why is it that the entire molecule does not o...

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  4. Retroviruses do not follow central dogma. Comment.

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  5. In an experiment, DNA is treated with the compound which tends to plac...

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  6. What would happen if histones were to be mutated and made rich in acid...

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  7. Recell the experiments done by frederick Griffith, Avery, MacLeod and ...

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  8. You are repeating the Hershey-Chase experiment and are provided with t...

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  9. There is only one possible sequence of amino acids when deduced from a...

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  10. A single base mutation in a gene may not 'always' result in loss or ga...

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  11. A low level of expression of lac operon occurs at all the time. Can yo...

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  12. How has the sequencing of humen genome opened new windows for treatmen...

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  13. The total number of genes in humans is far less(lt25000) the than the...

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  14. Now , sequencing of total genomes is getting less expensive day by day...

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  15. Would it be appropriate to use DNA probes such as VNTR in DNA fingerp...

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  16. During in vitro synthesis of DNA, a researcher used 2', 3'-dideoxy cyt...

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  17. That background information did Watson and Crick have made available f...

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  18. What are the functions of (i) methylated guanine cap? (ii) poly...

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  19. Do you think that the alternate splicing of exons may enable a structu...

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  20. Comment on the utility of variability in number of tansem repeats duri...

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