1) Mutations are caused by changes in nucleotide bases. these altered base formed different amino acid depending upon nucleotide base sequence that code specific amino acid. ... even though some mutations, can have a more effect on amino acid coding, which can affect what kind of proteins are produced.
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Living cells observation useful mircoscope view
Ribosomes<span> consist of two </span>major components<span>: the small </span>ribosomal<span> subunits, which reads the rna , and the large subunits, which joins amino acids to form a polypeptide chain. Each subunit is composed of one or more </span>ribosomal<span> rna ( molecules and a variety of </span>ribosomal<span> proteins .HOPE THis helps! :)
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Most animal and plant species we see in the fossil record are extinct, or no longer living. In fact, of all the species that ever lived, 98% are extinct. Animals and plants become extinct over time as a result of natural processes. Their habitat might change or a disease might wipe out a species.