..............is common for both $DNA$ and $RNA$ but.............is present only in $DNA$.

  • A
    Uracil,thymine
  • B
    Thymine,Uracil
  • C
    Guanine,thymine
  • D
    Cytosine,uracil

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$A$ polymer of deoxyribonucleotides is known as - ........

When a chromosome,which appears like beads on a string,is observed under an electron microscope,what is this structure called?

Genes are arranged on .......

Which scientists proposed the complete and systematic model of $DNA$?

Why are histone proteins positively charged?

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