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- "Hey Dad, I am excited to go see how the plants are doing at the house!"
- Me too son I can't wait to see so many beautiful flowers.!
- Well, flowers use something called gene expression to make them the color they are.
- "Oh look dad, they are starting to bloom, but I'm confused, how do flowers turn to those colors such as pink and red.
- Gene Expression is when information stored in our DNA is converted into instructions for making proteins or other molecules. The two main parts of Gene Expression are Transcription and Translation.
- What is Gene Expression?
- To start off the process, the enzyme, RNA polymerase, splits the DNA into two different strands and uses one strand as a template to produce RNA molecules.
- What is Transcription?
- Transcription is when DNA in a gene is copied to produce an RNA transcript called mRNA. There are two main steps in Transcription.
- .
- Then, specific introns are removed from the strand, and a methyl cap and poly-A-tail are added to the strand converting it to mRNA
- What is Translation?
- Messenger RNA (mRNA) - carry copies of instructions for protein syntheses from nucleus to RIbosomes
- Transfer RNA (tRNA) - caries amino acids to ribosomes and matches them to sided MRNA message.
- Now, you see how Gene Expression is the way in which DNA,RNA and proteins are involved in expression of all the traits and functions of living cells. A Gene that codes to produce pigment can control color of flower. That is why flowers turn to different colors.
- The second part of Gene expression is process of Translation or Protein synthesis. It inTranslation is the process decoding of an mRNA message by the ribosomes into a protein.INITIATION--tRNA brings amino acid to bind to start codon on mRNAELONGATION-- tRNA bring amino acid one by one to add to Polypeptide chainTERMINATION-Stop code is reached and polypeptide and mRNA are released from the Ribosome.
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