Questions: Which is the stage of Gene Expression when mRNA codons are "read" to create a chain of amino acids? transcription replication translation

Which is the stage of Gene Expression when mRNA codons are "read" to create a chain of amino acids? transcription replication translation
Transcript text: Which is the stage of Gene Expression when mRNA codons are "read" to create a chain of amino acids? transcription replication translation
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Solution

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The answer is the third one (translation): the stage of Gene Expression when mRNA codons are "read" to create a chain of amino acids.

Explanation for each option:

  1. Transcription: This is the process where the DNA sequence of a gene is copied into mRNA. It occurs in the nucleus of eukaryotic cells and involves the enzyme RNA polymerase. This stage does not involve the reading of mRNA codons to create a chain of amino acids.
  2. Replication: This is the process of copying the entire DNA molecule to produce two identical DNA molecules. It occurs before cell division and ensures that each daughter cell receives an exact copy of the DNA. This process does not involve mRNA or the creation of amino acids.
  3. Translation: This is the process where the mRNA codons are "read" by the ribosome to synthesize a chain of amino acids, forming a protein. This occurs in the cytoplasm and involves tRNA molecules bringing the appropriate amino acids to the ribosome based on the codon sequence of the mRNA.

Summary: The stage of Gene Expression when mRNA codons are "read" to create a chain of amino acids is translation.

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