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A: There are some plus point for both the techniques like the wet Mount and hanging drop method preserv...
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A: Wet mounts and hanging drop mounts of live specimen are used in microbial motility.
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A: Forelimb is a homologous organ present in all animals but has evolved in course of time.
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A: Primary data is collected as an initial information by the primary user. Examples of primary data ar...
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A: The definition of nutrient dense snacks states that that it must be high in nutrients but relatively...
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A: Life-history strategies are fully dependent on the environment where organisms are living. The patte...
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A: Fermentation is a metabolic process that produces compound or chemical changes in natural substrates...
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A:
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- The ability to selectively modify the genome in the mouse has revolutionized mouse genetics. Outline the procedure for generating a knockout mouse at a specific genetic locus. How can the loxP-Cre system be used to conditionally knock out a gene? What is an important medical application of knockout mice?Based on the NCBI Blastp and reciprocal analysis, are there any mutations to suggest that mus musculus is a good model to test the human FGFR3 gene. This is the only model we have to go off of to predict whether a mouse is suitable. I can’t seem to grasp what exactly I’m suppose to look for in these two photos.You are interested in finding out in which organ GTF2H5 is highly expressed experimentally. Describe a method in recombinant DNA technology to measure gene expression, explain your rationale, and step by step, what are needed for this method to work
- Select all the examples of mutations that are likely to have a global effect on gene expression. Check All That Apply a mutation in a splice donor recognition sequence within an snRNA gene a mutation that reduces expression of an rRNA a hypomorphic mutation in the catalytic site of RNA polymerase a silent mutation in a gene encoding a protein in the small ribosomal subunit a nonsense mutation in a gene encoding an ion channelHow does reverse methylation affect gene expression? Select one: o a. The gene is turned off, but still expresses a protein product. b. The gene becomes transcriptionally silent. c. There is no effect on the gene. d. The gene is hyperactive resulting in a gain of function. e. The gene expresses the wrong protein. Clear my choice How do microRNAs regulate epigenetic mechanisms during development? Select one: o a. MicroRNAs function as gene repressors b. You only find microRNAS in epigenetic and cancer cells c. MicroRNAs function as gene activators d. MicroRNAS regulate methylation on the DNA sequences of embryos e. Researchers find that when microRNAs are present the effects of epigenetic modifications are 50% greater Clear my choiceThe transcription factor Pax6 is required continually during the life of a mouse (or a human) for the development of the retina. Homozygous Pax6 knockout mice die soon after birth because Pax6 protein is also required in essential organs, such as the pancreas. a) In order to study the role of Pax6 in eye development a researcher wants to generate a mouse that expresses Pax6 everywhere except in its eyes. Describe how you could construct such a mouse by floxing the gene. Is it possible to achieve the same end with a transgene? (Hint: think about using cDNA and RNAI) b) Suppose you want to create a mouse similar to that in part (a), but one where the eye cells from Pax6 function has been removed and now express a gene that specifies a green fluorescent protein (GFP). Marking the cells in this way will allow the investigators to see the shapes of the Pax6- eye cells more easily than if they did not express GFP. Diagram a Pax6 gene construct that would enable the researcher to do this…
- It seems that the expert only addressed the background of prorooncogen and the impact of Ras causing various mutations and affecting several codons of the genes, but didn't address the problem "Why would a translocation that put Ras behind the promoter region of the actin gene lead to the formation of an oncogene?"You have discovered a new bHLH gene and would like to use ChIP-Seq to learn more about it's role in gene regulation. Describe the experiment you would perform, include your expected results.Propose a strategy to prevent HIF-alpha signaling in the TME. What do you think would happen in a transgenic mouse with a total knockout of HIF-alpha?
- On the image, you can see the results of a DNA microarray used for cancer prognosis, where tissue samples from healthy and cancerous tissues were analyzed. cDNA from healthy cells and cancer cells were labeled with green and red fluorescence, respectively, mixed equally, and hybridized with the chip. It is known that gene A is more highly expressed in breast cancer type I, while genes B and C have lower expression in type II, which is highly aggressive. Based on the gene expression levels shown in the image, the cancer sample does not correspond to either type I or type II breast cancer, why is that?Our understanding of the molecular biology of cancer formation has been greatly enhanced by studying oncogenic viruses. Answer the following questions regarding oncogenic retroviruses? Explain how a gain of function mutation in the Ras protein caused by a retrovirus might lead to cancer formation.siRNAs are used to “knockdown” gene expression in research. Imagine you are a scientist who hopes to study several genes related to cancer. Select all the scenarios you will be able to successfully use RNA interference with the use of siRNAs (select all that apply): Group of answer choices Regulate transcript levels by targeting the siRNA to core promoter regions (e.g. TATA box) of tumor suppressor genes Regulate transcript levels by targeting the siRNA to the regulatory promoter regions (e.g. enhancers) of tumor suppressor genes Regulate transcript levels by targeting the siRNA to any region of the processed mRNA Regulate transcript levels by targeting the siRNA to the 5’ UTR of the processed mRNA Regulate transcript levels by targeting the siRNA to the 3’ UTR of the processed mRNA Regulate transcript levels by targeting the siRNA to sites where the histone acetyl transferase will acetylate the histones Regulate transcript levels by targeting the siRNA to where the start…