Gene Expression
Asked by Nandini Patel · 2 years ago
What are the main steps involved in gene expression?
1 Answer
Gene expression involves two main processes: transcription and translation.
1. Transcription:
- DNA is used as a template to produce mRNA
- RNA polymerase synthesizes mRNA
- Occurs in the nucleus (in eukaryotes)
2. Translation:
- mRNA is decoded to produce a protein
- Occurs on ribosomes in the cytoplasm
- tRNA molecules bring amino acids to the ribosome
- Amino acids are linked to form a polypeptide chain
3. Post-translational modifications:
- The polypeptide may undergo further modifications to become a functional protein
This process allows the information in DNA to be expressed as functional proteins in the cell.
1. Transcription:
- DNA is used as a template to produce mRNA
- RNA polymerase synthesizes mRNA
- Occurs in the nucleus (in eukaryotes)
2. Translation:
- mRNA is decoded to produce a protein
- Occurs on ribosomes in the cytoplasm
- tRNA molecules bring amino acids to the ribosome
- Amino acids are linked to form a polypeptide chain
3. Post-translational modifications:
- The polypeptide may undergo further modifications to become a functional protein
This process allows the information in DNA to be expressed as functional proteins in the cell.
NEET Faculty · 2 years ago
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