Uracil is a nitrogenous base found only in RNA. It replaces thymine from DNA and pairs with adenine during transcription.
Imagine uracil as an understudy actor for thymine. When it's time for the show called 'RNA,' uracil steps up to play the part that thymine usually plays in the 'DNA' show.
Transcription: The process by which genetic information encoded in DNA is transferred to messenger RNA.
Ribonucleic Acid (RNA): A molecule similar to DNA but contains ribose sugar and uracil instead of deoxyribose sugar and thymine.
Messenger RNA (mRNA): Type of RNA molecule that carries instructions from DNA for protein synthesis.
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