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Whose model of DNA was provided a viable...

Whose model of DNA was provided a viable confirmation by Messelson and Stahl:

A

Watson, Crick and Franklin

B

Linus Pauling

C

Johann Friedrich Miescher

D

None of these

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The proof for semiconservative mode of DNA replication was First provided by Matthew Meselson and Franklin Stahl. Escherichia coli were the first organism to be used for this experiment and then it was done in with higher organisms such as plants and human cells. The process of DNA replication in terms of energy is a very expensive process. It involves the formation of a replication fork. Given below is a graph showing the percentage of Adenine in two different double stranded DNA. Helicase helps in:

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EDUCART PUBLICATION-SAMPLE PAPER (SELF-ASSESSMENT )-9-MULTIPLE CHOICE QUESTIONS
  1. Primase is the enzyme responsible for initiation of DNA synthesis. Whi...

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  2. tRNA, SsrRNA, snRNAs are transcribed by:

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  3. Whose model of DNA was provided a viable confirmation by Messelson and...

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  4. X = ………………….. refers to the first menstruation while Y = …………... ref...

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  5. Pleiotropy is the effect of X = gene(s) on Y = ……………….. phenotypic exp...

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  6. Which among these are coded by only one codon ?

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  7. Which among these are roles played by ribosomes:

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  8. Capping II involves the addition of ................ . to the 5'-end o...

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  9. The only spot in a seed where the integuments are absent around ovule ...

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  10. Which among these characteristics is not required for a substance to b...

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  11. The given structure was proposed with the help of X-ray diffraction da...

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  12. A case dispfaying a pedigree across a family: The trait included ...

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  13. The cause of chromosomal disorders is absence or excess of abnormal ar...

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  14. In sickle cell anaemia glutamic acid is replaced by valine. Which one ...

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  15. Removal of anthers from the flower bud before the anther dehisces in c...

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  16. Under which of these conditions there is no need for emasculation?

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  17. Pollen tube enters the ovule through ………………………….. .

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  18. Emasculated flowers are bagged in order to:

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  19. Artificial hybridisation involves:

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  20. Bagging is mostly done using-

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