MRNA is needed in the cells because it directs the synthesis of proteins which is found in the cytoplasm. It is a molecule that carries the message contained within DNA to the ribosome. The Proteins are assembled on the ribosomes using the mRNA nucleotide sequence as a guide.
It’s a huge typhoon-like storm of swirling gasses. A long-lived, oval cloud circulation similar to a hurricane on Earth.
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Firstly, eukaryotic DNA tends to be much longer; it's held inside a nucleus, so it has to be separated from the rest of the cell; and there are also mitochondria in most eukaryotic cells, which have their own RNA, which has to be separated.
Answer: Today, almost all evolutionary relationships are inferred from molecular sequence data. This is because: DNA is the inherited material. We can now easily, quickly, inexpensively and reliably sequence genetic material.
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