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The anti -paralle nature of DNA refers t...

The anti -paralle nature of DNA refers to

A

Its charged phosphate groups

B

The opposite direction of the two strands

C

The pairing of bases on one strand with bases on the other strand

D

The formation of hydrogen bonds between bases from opposite strands.

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The correct Answer is:
B
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The semi-conservative nature of DNA replication was established by Meselson and Stahl in their classic experiment with bacteria. They grew bacteria in N^(15)-NH_(4)CI containing medium with N_(14) - containing compounds and allowed to grow for three generation . CsCI density gradient centrifugation of isolated DNA established the nature of semiconservation DNA replication. The pictorial representation below shows the positon of differentially labeled DNA in CsCI density gradient. Had the DNA replication been conservative, what would have been the pattern ?

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GRB PUBLICATION-THE GENETIC MATERIAL-DNA REPLICATION
  1. There is no DNA in

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  2. In microbial genetics which one is referred to as "Griffith effect"?

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  3. The anti -paralle nature of DNA refers to

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  4. Among the nitrogenous bases involved in DNA and RNA formation, the dou...

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  5. In a double stranded DNA molecule , the percentage of cytosine is 18. ...

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  6. In DNA of certain organisms, guanine constitutes 20% of the bases. Wha...

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  7. In a nucleotide having a cytosine base and linked to a sugar by glycos...

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  8. The part of molecule that varies among DNA molecule is

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  9. There is no DNA in

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  10. Which DNA replication starts

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  11. During replication of DNA, Okazaki fragments are formed in the directi...

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  12. True replication of DNA is possible due to

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  13. If the total amount of adenine and thymine in a double stranded DNA is...

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  14. Purines have nitrogen atoms at positions.

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  15. During Meselson and Stahl's experiments, heavy DNA was distinguished f...

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  16. DNA gyrase, the enzymes that participates in the process of DNA replia...

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  17. Given below is a sample of a portion of DNA strand giving the base seq...

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  18. The double helical model of the DNA was proposed by Watson and Crick b...

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  19. The pyrimidine base which confers additional stability to DNA over RNA...

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  20. In Hershey and Chase experiments , radioactive .^(32)P was used to cul...

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