Question

when transcription occurs in eukaryotic cells, a dna strand is copied to an mrna strand that contains introns and exons. which of the two is needed for the production of proteins, and why? exons because they are coding sequences exons because they are non - coding sequences introns because they are non - coding sequences introns because they are coding sequences.

Explanation:

Exons are coding sequences of DNA that are translated into proteins. Introns are non - coding sequences that are removed during RNA processing. So exons are needed for protein production.

Answer:

Exons because they are coding sequences.