Question

Thats the whole question provided. What other information do you need?​​​​​​​

3. A human gene was initially identified as having three exons and two introns. In order, the exons are 456, 224, and 524 bp, while the introns are 2.3 kb and 4.6 kb. a. Draw this gene showing the promoter, introns , exons, and the transcription start and stop sites. b. Suprisingly, it is found that this gene encodes not one but two mRNAs that have only 224 nucleotides in common. The original mRNA is 1204 nucleotides, while the new mRNA is 2524 nucleotides. Use your drawing to show how it is possible for this one region of DNA to encode these two transcripts

Answer 1

followFollow the flow chart for possible obtions

Start codon 2.3 kb intron1 4.6 kb intron 2 Stop codon Promotor 456 bp exon 1 224 bp exon 2 524 bp exon3 Transcription splicing 1 456 bp exon 1 224 bp exon 2 524 bp exon3 Poly A tailing Transcription splicing 2 224 bp exon 2 524 bp exon 3 524 bp exon3 (if tendem repeat is present) Poly A tailing