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(a) What is Central dogma? Who proposed ...

(a) What is Central dogma? Who proposed it?
(b) Describe Meselson and Stahl's experiment to prove that the DNA replication is tsemi-conservative.

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(a ) Francis Crick proposed the Central Dogma in molecular biology, which states that the genetic information flows from DNA `to` RNA `to` Proteins.
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Describe Meselson and Stahl's experiment to show that DNA replication is semiconsertive.

With the help of Meselson and Stahl experiment prove that DNA mode of replication is semi-conservative type.

Knowledge Check

  • J.H. Taylor's experiment which proved that DNA replication is semi-conservative, was done on

    A
    salivary gland cells of Drosophila melanogaster
    B
    root tip cells of Vicia faba
    C
    oocyte of Periplaneta americana
    D
    cells of Neurospora crassa.

  • Meselson Stahl experiment on semiconservative replication demonstrate that :

    A
    50% radioactive, 50% non- radioactive
    B
    50% non-radioactive
    C
    50% radioactive
    D
    none of the above

  • which statement explains why DNA replication is described as semi - conservative ?

    A
    Half of each original strand is conserved in each new molecule of DNA.
    B
    Half of the base sequence of each strand is conserved in each new molecule of DNA.
    C
    Only one strand of DNA is used as a template during replication.
    D
    The template for each new strand of DNA molecule is one strand of the original molecule

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