The hypothesis established by the 'transformation' experiments using $Pneumococcus$ bacteria is that:

  • A
    $DNA$ is the genetic material.
  • B
    Bacteria exhibit sexual reproduction.
  • C
    Chromosomes are made of $DNA$.
  • D
    $RNA$ is the genetic material.

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Which scientist is associated with the term 'Nuclein'?

Retroviruses do not follow the central dogma. Comment.

If the transforming principle is transferred to the $R$-strain,what characteristics will the $R$-strain acquire?
$(i)$ Formation of a smooth polysaccharide coat
$(ii)$ Becomes non-virulent
$(iii)$ Becomes virulent
$(iv)$ Does not form a smooth polysaccharide coat

What is a bacteriophage?

$A$ series of experiments were conducted by Frederick Griffith in $1928$,on the transforming principle with:

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