DNA is a huge molecule with lakhs of genes. At time of protein synthesis, only one or a few genes are needed which is very difficult to synthesize directly from that huge molecule.
Secondly, DNA is a very important molecule, which remains inside nucleus. All the protein synthesizing elements like amino acids etc are present in cytoplasm. So protein synthesis inside nucleus is impossible.
<h3><u>Explanation:</u></h3>
DNA is the genetic molecule of an organism. It is a huge polymer of different nucleotides stacked together one after the other. One gene occupies a very small fragment of this DNA. So during protein synthesis, if protein is directly synthesized from the whole DNA, a huge portion of energy will be lost fully unwinding the helical structure. And there will be more chances of an error and mutations will creep in very easily.
Secondly, DNA remains inside the nucleus of a cell. And inside the nucleus there's no entry of amino acids, which are essentially needed for protein synthesis. So protein synthesis from DNA is very risky and practically not feasible.
Answer:
Traditionally, some textbooks from the United States and Canada used a system of six kingdoms (Animalia, Plantae, Fungi, Protista, Archaea/Archaebacteria, and Bacteria/Eubacteria) while textbooks in countries like Great Britain, India, Greece, Brazil and other countries use five kingdoms only (Animalia, Plantae, Fungi, Protista and Monera).
B.The embryo attaches to the mother
Exchanging oxygen and carbondioxide between air and lungs because it just involves breathing system but everything else involves hormones.........
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MRNA or messenger RNA. As the central dogma of biotech goes, DNA is transcribed to mRNA which is translated to tRNA, after which the amino acids form peptide bonds and form proteins. So when you see transcription, the first thing you think of is DNA to mRNA.
