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- The figure below shows RNA-Seq data (RED) for the D. melanogaster transformer (tra) gene obtained from both adult female and male fruit flies. The blue lines indicate the tra gene structure, with thicker lines indicating exons, and thin lines introns. The 5' end of the gene is on the left, and the 3' end of the gene is on the right. Based on these data, the most likely conclusion is: Males and females express identical isoforms of tra Males express more tra RNA than females The female isoform has fewer amino acids The female isoform has more amino acids The male and female isoforms have different 3'UTRsIf Gus is present in the Arabidopsis Thaliana what is it indicating? I know its to show gene expression, but what is the importance of that? I hope this makes senseWhat is the role of Agrobacterium tumefaciens in the production of transgenic plants? a. Genes from A. fume fociens are inserted into plant DNA to give the plant different traits. b. Transgenic plants have been given resistance to the pest A. tumefacaens. c. A. wmefaciens is used as a vector to move genes into plant cells. d. Plant genes are incorporated into the genome of Agrobacterium tumefaciens.
- a. Explain how you could use worms transformedwith myo-2::GFP to find mutations that disrupt thestructure of the pharynx. How would the presenceof the transgene facilitate the mutant screen?b. Nematodes homozygous for loss-of-function mutations in a gene called pha-4 have no detectablepharyngeal structures. How could you use myo2::GFP to determine if pha-4 is a master regulatory gene that directs development of the pharynxin a manner similar to the way Pax-6/eyeless controls eye development?Plants are more readily manipulated by genetic engineeringthan are animals because(A) plant genes do not contain introns.(B) more vectors are available for transferring recombinantDNA into plant cells.(C) a somatic plant cell can often give rise to a completeplant.(D) plant cells have larger nucleiScientists are currently screening a chemical library of small molecules for inhibitors of bioluminescence in response to high cell density in V. fischeri.The small molecules were chosen for their potentialability to bind LuxR.a. How could a molecule that binds LuxR preventbioluminescence?b. Hundreds of different bacterial species use quorumsensing mechanisms similar to that of V. fischeri andencode proteins similar to LuxI and LuxR. In lightof this information, why do you think scientists wantto identify the molecule described in part (a)?
- The origin of genes that have new functions often involves the divergence of geneduplicates. Duplicates can arise via severalmechanisms.a. One mechanism of gene duplication is retrotransposition, the insertion into the genomeof DNA produced by reverse transcription ofa messenger RNA. These gene duplicates areoften dead on arrival: they are pseudogenesas soon as they are formed. Why are suchduplicates so often dead on arrival?b. A second mechanism of gene duplicationoccurs via unequal crossing over duringmeiosis. Gene duplicates formed this way arefunctional more often than when they arise byreverse transcription. Why is that?c. If a gene duplicate is initially functional, whatare its possible ultimate fates? Which is mostlikely, and why?Let’s suppose a researcher was interested in the effects of mutationson the expression of a protein-encoding gene for a proteinthat is 472 amino acids in length. This protein is expressed in leafcells of Arabidopsis thaliana. It has a molecular mass of approximately56,640 Da. Make a drawing that shows the expected resultsof a Western blot using proteins isolated from the leaf cells thatwere obtained from the following plants:Lane 1. A plant homozygous for a nonmutant geneLane 2. A plant homozygous for a deletion that removes the promoterfor this geneLane 3. A heterozygous plant in which one gene is nonmutant andthe other gene has a mutation that introduces an early stop codon atcodon 112Lane 4. A plant homozygous for a mutation that introduces anearly stop codon at codon 112Lane 5. A plant homozygous for a mutation that changes codon108 from a phenylalanine codon into a leucine codonAlthough humans and nematodes (round worms) have approximately the same number of coding genes, humans exhibit greater phenotypic complexity. This illustrates the ______________________ paradox which can be partly explained by_______________________. Group of answer choices G value, differences in gene regulatory networks (e.g., # transcription factors) C-value, cell size and transposable elements G-value, cell size and transposable elements C-value, differences in gene regulatory networks (e.g., # transcription factors)
- What is the major reason why the maize genome is much larger than the rice genome?a. Maize has more genes than rice.b. Rice has more genes than maize.c. Maize has more DNA transposons than rice.d. Maize has more retrotransposons than rice.For each statement below indicate whether it is true or false. A. Assume that a species has a diploid chromosome number of 24. The term applied to an individual with 25 chromosomes would be aneuploid. B. 5’GGATTC3’ is the consensus sequence of the -35 regulatory region of prokaryotic genes. C. The chromosomes in the image illustrate a reciprocal translocation:Hello, I did a Natural Transformation lab and have these questions to answer but don't really understand how all the processes difinetively work. If someone could explain this it would be greatly appreciated. Thank you Explain what happened in each quadrant of the TSA and DMA plates. Seven of these quadrants represent controls for this experiment – you should explain why each control was done, whether or not you would expect growth to appear in that quadrant and why, and what result you saw with your experiment (if you did not get the result that you anticipated, explain why not). Acinetobacter are common soil organisms. What do the results of this experiment tell you about potential problems that may be encountered with release of genetically modified organisms? (e.g. crops engineered for pest resistance)