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Describe why translation of an mrna can start before transcription of the mrna is complete in prokaryotes but not in eukaryotes.

Answer :

Answer:

In prokaryotes both transcription and translation occurs in cytoplasm (they lack true nucleus) while in eukaryotes, transcription occurs in nucleus while translation occurs in cytoplasm.

Explanation:

1. Prokaryotes do not have nucleus, so both transcription and translation occurs in the cytoplasm, therefor translation start before the completion of transcription.

2. While in eukaryotes, they have true nucleus, and there protein synthesis machinery (ribosomes) and  is situated in the cytoplasm.

So in eukaryotes transcription occurs in the nucleus, and after the completion of transcription, mRNA is processed and finally export into cytoplasm for translation.

The translation is one of the primary steps of the central dogma, in which cell synthesis proteins based on the information given by mRNA.

In prokaryotes, the organism that lacks a nucleus, the process of transcription and translation occurs in the cytoplasm.

In eukaryotes, which have a well-defined nucleus, the process of transcription and translation occurs in the nucleus and cytoplasm, respectively.

The prokaryotes are primitive organism, which undergoes transcription and translation simultaneously in the cytoplasm. Thus, the translation of mRNA in prokaryotes can start before transcription.

On the contrary, eukaryotes cannot undergo translation prior to the transcription. The information to proceed ahead is stored in the mRNA, which is released from the nucleus to the cytoplasm.

Thus, prokaryotes can undergo translation and transcription simultaneously.

To know more about translation and transcription, refer to the following link:

https://brainly.com/question/3234164

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