Question

A 3000 bp region of the human genome encodes two genes. One of the genes encodes a protein of 700 amino acids and the other gene encodes a protein of 310 amino acids. The mRNA sequences of the two genes do not contain any of the same nucleotide sequences. How is this possible? That's all the information given.

How are there no overlaps? Thats what I don't understand, I know there are 2100 base pairs and and 900 base pairs, and I think 10 of those from 910 are extra.

Answer 1

(a) The transcription process is known when the transcription process occurs after synthesizing the nucleotides it removes the introns (e.g. the noncoding part),and then joins the exons (e.g. coding parts),that's why the m-RNA sequence does not same as the genome sequence.

(b) In many cases of translation the overlapping are generally translated in different farmes, or a another possibility is that the overlapped regions may contained those intron regions so they might have been excluded out at the time of splicing.So this phenomena can modify and shorten the gene sequence during mRNA synthesis and can also remove the overlapping region.