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Fudgin [204]
3 years ago
15

Classify each description as true of introns only, exons only, or both.A-present in eukaryotic genomesB-generally absent from ba

cterial genomesC-part of the final mRNA strandD-code for an amino acid sequenceE-removed from initial mRNA strand prior to translationF-present in the DNA used as the template for transcription
Biology
1 answer:
maxonik [38]3 years ago
6 0

The right answers are:

A-present in eukaryotic genomes ==> Both exons and introns

B-generally absent from bacterial genomes ==> Introns

C-part of the final mRNA strand ==> Exons

D-code for an amino acid sequence ==> Exons

E-removed from initial mRNA strand prior to translation ==> Introns

F-present in the DNA used as the template for transcription ==> Both exons and introns

In the genes of eukaryotic organisms, the exons are the segments of an RNA precursor that are conserved in the RNA after splicing and that are found in mature RNA in the cytoplasm. The segments of the RNA precursor that are removed during splicing are called in opposition to introns. Exons are mainly found in messenger RNAs (mRNAs) encoding proteins. Some mRNAs may sometimes undergo an alternative splicing process in which one or more exons may be excised or some introns preserved in rare cases.

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