A mRNA molecule left the nucleus and was degraded. What most likely did not occur before it left the nucleus? 3’-cap and 5'-poly(A) tail were not added No splicing occurred 5'-cap and 3'-poly(A) tail were not added Exons and not introns were spliced out

A mRNA molecule left the nucleus and was degraded. What most likely did not occur before it left the nucleus? 3’-cap and 5'-poly(A) tail were not added No splicing occurred 5'-cap and 3'-poly(A) tail were not added Exons and not introns were spliced out

Name: A mRNA molecule left the nucleus and was degraded. What most likely di
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Description: A mRNA molecule left the nucleus and was degraded. What most likely did not occur before it left the nucleus? 3’-cap and 5'-poly(A) tail were not added No splicing occurred 5'-cap and 3'-poly(A) tail were not added Exons and not introns were spli

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter9: Gene Expression And Gene Regulation

Section: Chapter Questions

Problem 16QP: Given the following tRNA anticodon sequence, derive the mRNA and the DNA template strand. Also,...

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Given the following tRNA anticodon sequence, derive the mRNA and the DNA template strand. Also, write out the amino acid sequence of the protein encoded by this message. tRNA: UAC UCU CGA GGC mRNA: protein: How many hydrogen bonds would be present in the DNA segment?
Incorrect statement about m-RNAa) Cap is added to the 5’ endb) Introns are removed and exons are spliced togetherc) Histone mRNAs lack 5’ capd) Poly-A tail is added to the 3’ end
In eukaryotes, the initial transcript, pre-mRNA, must be modified in three ways before it leaves the nucleus. The pre-MRNA is spliced, given a polyA tail and a cap. Examine the pre- MRNA shown below, then choose the one mature MRNA it would become aftër post-transcriptional modification. Pre-MRNA 5' EXON R INTRON A EXON S INTRON B EXON T 31 polyA tail S сар 3' • 5' сар T polyA tail 3" сар polyA tail 3' polyA tail RAS в т сар 3" RAS BT polyA tail 3' сар
Which mRNA sequences would form a structure that is a cue for transcription termination of some genes? 5'-GGCCCUUUUACCCGGUUUU-3' 5'-GCAUCUUACUGAUGCUUUU-3' a stem-loop hairpin structure followed by a sequence of uracil residues in the RNA a palindromic region followed by a sequence of adenine residues in the RNA a sequence of uracil-adenine RNA-DNA base pairs
Shown below is an eukaryotic gene. Assuming normal wild type RNA processing in a.cell, which of the following mature MRNAS could result in normal levels of functional synthesized proteins? Select all that apply Direction of transcription Promoter Template strand 5' Exon 4 Intron 3 Exon 3 Intron 2 Exon 2 Intron 1 Exon 1 3' 5' Coding strand Transcription start Transcription start 5' CAP-Exon1-Exon3-Exon4-AA..AAAA 5' CAP-Exon1-Exon2-Exon3-Exon4-AA...AAAA 5' CAP-Exon1-Exon2-Exon3-Exon4 Exon1-Exon2-Exon3-Exon4-.....AAAA
Which of the following sites would you predict to be present in the gene encoding a MRNA molecule and what would be their order? LIST OF SITES #1 Promoter #2 Ribosome Binding Site #3 Translation Initiation Site #4 Translation Termination Site #5 Transcription Initiation Site #6 Transcription Termination Site O 3, 1, 2, 6, 4, 5 O 1, 3, 2, 5, 6, 4 О 1,5, 2, 3,4, 6 О 1,3, 2,4 О 1,3,4
Imagine you are going to label a gene associated with apoptosis in Symbiodiniaceae with a Yellow Fluorescent Protein (YFP). To generate the YFP, you know the pre-MRNA looks as follows: Unspliced YFP premature mRNA Сap 5' UTR Exon 1 Intron Exon 2 Intron Exon 3 3' UTR Poly-A tail If Exon 2 is also required for mRNA stability, what can be predicted from the possible spliced alternative isoforms formed? One of the isoforms will not have a poly-A tail O The alternative splicing of YFP pre-MRNA prevents 5'-capping The MRNA isoform without Exon 2 will be degraded faster than the other isoform Exon 2 will be added to isoform B later to correct the mistake in splicing The protein translated from one of the mRNA isoforms will possess an additional functional domain
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The diagram shows a pre-mRNA before splicing and processing. In this cell type, a protein is present that binds to the 3' splice site of intron 2, such that the spliceosome cannot bind here. What components of this transcript will be retained (and ultimately translated) vs. removed (not translated) in the spliced mRNA? RNA Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 Intron 3 Exon 4 Exon 1 Intron 1 Exon 2 Intron 2 Exon 3 Intron 3 Exon 4 Removed Retained > <
The following is a portion of an mRNA sequence: 3’ –AUCGUCAUGCAGA-5’ a)During transcription, was the adenine at the left-hand side of the sequence the first or the last nucleotide used to build the portion of the mRNA shown? Explain how you know. b)Write out the sequence and polarity of the DNA duplex that encodes this mRNA segment. Label the template and coding DNA strands. c)Identify the direction in which the promoter region for this gene will be located.
29. pre-MRNA transcript 5' 3' Open boxes represent introns Filled boxes represent exons A) Draw the MRNA to be translated if the pre-mRNA is constitutively spliced. S B) Draw an mRNA to be translated if the pre-MRNA is alternatively spliced due to exon skipping.