1How does 2D code of DNA become three dimensional in living

1.How does 2D code of DNA become three dimensional in living cells? Or how do cells use this 2D code to make 3D structures?

3.Most cells in pats of a plant contain the came complete DNA code. Why then are the flower petal\'s cells the only cells that become purple while the rest of the plant is green? How are genes involved?

Solution

2D Code at genomic DNA, RNA level codes for peptide chains. The peptide chains have a property of folding in a certain way as determined by the primrary sequence of amino acid (Anfinsen Experiment in Protein Folding. So peptide folding makes protiends of certain specific shape having a certin specific activity related to that shape. Hence 2D nonfunctional DNA is eventually tuned into 3D functional protien domain level. cells use specific transcription and translation of nucleic acids to achieve 2d to 3D protien level.

3. INTRESTING QUESTION ...to put it simply basically promoters are organ specific say leafspecific promoter, fruit specific promoter , root specific promoter, which can activate gene expression only in respective organs using mechainism of epigentic control and cell specific transcription factors. So gene producing petal colour would be epigenetically and transcriptionally controlled to be expressed in petal specific sells or would come under the petal-specific Gene promoter ... such that even though if gene is present in all cells it is only specifically produced in petal cells,

it is like insulin is present in all human body cells but made specifically by beta-cells in pancrease and not eye cells because it is hetereogenetically controlled in eye cells.

Hope it helps feel free to discuss and comment more .... i would be glad if i can help more

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