It is called a electron. A electron has a negative charge in atoms.
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<span>A theory is replaced rather than revised when the fundamental assertions or ideas behind the theory are proved to be incorrect. When a theory is replaced it is called superceded or obsolete (but only if it was once accepted by the scientific community at large - fringe theories remain fringe theories). One example is Lamarckism in evolutionary theory which was succeeded by Mendel’s ideas of genetics and Darwin’s theory of evolution.</span>
A mutation within a gene that will insert a untimely cease codon in mRNA would result in a shortened polypeptide chain.
<h3>What occurs if there is a untimely end codon?</h3>
Thus, nonsense mutations occur when a premature nonsense or end codon is added in the DNA sequence. When the mutated sequence is translated into a protein, the resulting protein is incomplete and shorter than normal. Consequently, most nonsense mutations result in nonfunctional proteins
<h3>What mutation motives untimely cease codon?</h3>
In genetics, a nonsense mutation is a factor mutation in a sequence of DNA that effects in a premature stop codon, or a nonsense codon in the transcribed mRNA, and in a truncated, incomplete, and normally nonfunctional protein product.
Learn more about mutation here:
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Cell membrane is made up of Lipid Bilayer which are fluid in nature , means they move continuosly , due to this fluid nature they are selectively permeable to compounds.