MRNA transcripts can be collected from cells, made to glow with a fluorescent dye, and added to a microarray chip containing spots with DNA sequences from each of these genes. (In the depiction of the microarrays below o indicates no binding of the MRNA, and • indicates binding.) HDL-R PFK CD3 After washing the chip, you then collect MRNAS from liver cells and add them to the same chip, which of the gene expression patterns would you expect to see? O A O B O D

MRNA transcripts can be collected from cells, made to glow with a fluorescent dye, and added to a microarray chip containing spots with DNA sequences from each of these genes. (In the depiction of the microarrays below o indicates no binding of the MRNA, and • indicates binding.) HDL-R PFK CD3 After washing the chip, you then collect MRNAS from liver cells and add them to the same chip, which of the gene expression patterns would you expect to see? O A O B O D

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 10QP: The pre-mRNA transcript and protein made by several mutant genes were examined. The results are...

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1. You are investigating a protein that has the amino acid sequence N ... Ala – Thr - Asn – Trp – Lys - Arg - Gly – Phe – Thr ... C within its primary structure. You found that several of the mutations affecting this protein produced shortened protein molecules that terminated within this region. In one of the mutants, the Asn became the terminal (last) amino acid. (a) What DNA single-base changes(s) would cause the protein to terminate at the Asn residue? (b) What other potential sites do you see in the DNA sequence encoding this protein where mutation of a single base pair would cause premature termination of translation? >
A protein has the following amino acid sequence: Met-Tyr-Asn-Val-Arg-Val-Tyr-Lys-Ala-Lys-Trp-Leu-Ile-His-Thr-Pro You wish to make a set of probes to screen a cDNA library for the sequence that encodes this protein. Your probes should be at least 18 nucleotides in length. Q. Which amino acids in the protein should be used to construct the probes so that the least degeneracy results?
A protein has the following amino acid sequence: Met-Tyr-Asn-Val-Arg-Val-Tyr-Lys-Ala-Lys-Trp-Leu-Ile-His-Thr-Pro You wish to make a set of probes to screen a cDNA library for the sequence that encodes this protein. Your probes should be at least 18 nucleotides in length. Q. How many different probes must be synthesized to be certain that you will find the cDNA sequence that specifies the protein?
Choose 1 or more than 1 RNA are extracted from liver cells and separated in agarose gel by electrophoresis side-by-side with a molecular weight marker. The separated RNA fragments are then transferred to an RNA-binding membrane. Next, this membrane is incubated with labelled probe specific for the gene X. This experiment determines: how many copies of gene X there are in liver cells. if the gene X is translated in liver cells. if gene X has a point mutation in liver cells. the chromosomal location of gene X. the length of the transcript of gene X.
The DNA sequence below is transcribed from left to right (the partner/coding strand is shown). Using this sequence, write the sequence of the mRNA molecule that is generated from this gene. Be sure to appropriately label the ends of the molecule. 5'-ATGCACGGCGACTAG-3' For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac). B I UIS Paragraph Arial 10pt A v T 0 $1
Describe the primary procedure(key steps no details) that you will follow to clone the C-peptide gene from the RNA above into the only vector you have, a pUC expression vector cut open usingEcoR1which has a 5¢-recognition site and a 3¢- Hind III in the MCS?
Below is the double stranded DNA sequence of part of a hypothetical yeast genome encoding a very small gene. Transcription starts at nucleotide immediately following the promoter. The termination sequence is TATCTC. How many amino acids will this protein have? 5' TCATGAGATA GCCATGCACTA AGGCATCTGA GTTTATATCT CA 3' 3' AGTACTCTAT CGGTACGTGAT TCCGTAGACT CAAATATAGA GT 5'
In Northern blot analysis, mRNA samples from tissues are bound to a labeled DNA probe that is complementary to the mRNA, and run on a gel to be visualized. The protein tropomyosin is known to be present in both brain and liver. When brain and liver tissue were assayed for the presence of tropomyosin mature mRNA, bands of two different sizes were seen. Tropomyosin gene diagram (3000 bp total): Shown in attatched image If the band on the Northern blot for mRNA isolated from liver tissue is 2580 bp, whereas from brain tissue the band is 2250 bp, what is most likely? a)The two mRNAs are made from different tropomyosin DNA sequences. b)Exon 2 is alternatively spliced out of the brain mRNA. c)Introns 1 and 2 are spliced out of the brain transcript but not the liver transcript. d)Exons 1 and 3 are spliced out of the brain transcript but not the liver transcript. e)Exon 2 is alternatively spliced out of the liver mRNA.
Briefly discuss (referring to the images provided) why mutant 2 fails to produce functional protein. Note that none of the mRNA transcribed from this gene is of the expected size; some of the mRNA molecules produced are 223 nucleotides shorter than expected, whilst others are 47 nucleotides longer than expected.
Complete the protein synthesis for the partial DNA sequence for a normal FGFR3 gene (TOP) and mutated FGFR3 gene (BOTTOM). Remember, when filling in mRNA, use capital letters only. When filling in amino acids, use three letters, with the first letter capitalized. If you do not use this format, your answer may be marked wrong. DNA CCG TTC GGG GAA ССС MRNA Amino Acid DNA CCG TTC GGG GAA TCC MRNA Amino Acid
Based on the electron micrograph shown, which of the following statements is/are correct/true? Select all that apply. You may select mutiple options. DNA and mRNAs are marked by arrows. DNA mRNAs #3 Left Right 1 μm You cannot determine relative mRNA lengths from this image You cannot determine the direction of transcription from this image the longest mRNA is on the right side ✔Direction of transcription is left to right O Direction of transcription is right to left the 5' end of the mRNA marked #3 is at the bottom O the longest mRNA is on the left side the 5' end of the mRNA marked #3 is at the top You cannot determine the 5' or 3' mRNA ends from this image
You are working for a pharmaceutical company are are tasked with creating E. Coli that express an influenza antigen (a protein that is recognized by our immune system) fortreatment of the influenza virus. The cDNA of the antigen is available in a carrier vector(pCARRY) that contains a kanamycin resistance gene as shown on the left below. Inorder to get E. Coli to express the antigen, you need to clone the gene for the influenzaantigen into an expression vector that contains an E. Coli-specific promoter. You obtain such an expression vector, which contains an ampicillin resistance gene as shown on the right below (pBACTERIA) a. An end generated by digestion with BamH1 can be ligated to an end generated by digestion with BlgII. Why is this possible? b. To clone the gene for the influenza antigen from pCARRY into pBACTERIA plasmid:i. What restriction enzyme should you use to digest pCARRY? ii. What restriction enzyme should you use to digest pBACTERIA? c. After you ligate the products of…