Signal molecules from embryonic cells cause transcriptional changes in nearby target cells in the process called Induction Pattern formation Gene regulation
Q: Post-transcriptional control of gene regulation: None of the above Can stop gene expression quickly…
A: Proteins are a type of macromolecules that are critical for different varieties of roles in cellular…
Q: Translational control of gene expression occurs within thea. nucleus.b. cytoplasm.c. nucleolus.d.…
A: A gene is the fundamental biology unit just like the atom. Gene expression is the process by which…
Q: Signal molecules from embryonic cells cause transcriptional changes in nearby target cells in the…
A: Cell signaling(cell communication) is defined as the process the cells use chemical signals to…
Q: In the regulatory switch experiment, which level of gene expression regulation is the focus?…
A: Gen regulation is the method in which there are found different components which are involve in…
Q: Gene expression is Usually regualated at the initiation of transcription. True False
A: In particular, gene expression is controlled on two levels. To begin with, transcription is…
Q: Imagine you are a cell and you need to activate ("turn on") a gene as quickly as possible. What…
A: Gene expression is a tightly regulated process that allows a cell to respond to its changing…
Q: Cytosines are methylated most frequently in CG regions in the DNA. Pre-transcriptional control…
A: * In Pretranscriptional Control DNA methylation and chromatin packing are used. *Example Barr body…
Q: Some hormones act by binding to the promoters of particular genes in such a way that RNA polymerase…
A: Hormones are the organic substances that are produced in small amounts by specific glands, which are…
Q: Explain how/why Dolly the sheep is a powerful example of the importance of the regulation of gene…
A: Gene expression includes transcription and translation.
Q: Discuss the advantages and disadvantages of genetic regulation at the different points identified.
A: Genes are basic physical and functional unit of heredity. It is a part of DNA that has instruction…
Q: Which of the following is not an example of epigenetic gene regulation?a. genomic imprinting in…
A: Which of the following is not an example of epigenetic gene regulation?
Q: there is the statement: "Both stem cells and specialized cells have all the same genes. They differ…
A: Stem cells are a special type of cells found in humans; these cells possess the capability to…
Q: Combinatorial control refers to the phenomenon that a. transcription factors always combine with…
A: Among the given options, option(b) is the most appropriate."Combinatorial control refers to the…
Q: ene expression is required to give cells ________. longevity longevity unique genes unique genes…
A: The basic unit of heredity is a gene. Genes occupy a specific location on the chromosomes. Most of…
Q: Which of the following statements about the DNA in one of your brain cells is true? (A) Most of the…
A: Answer is C.) It is the same as the DNA in one of your liver cells.
Q: Gene expression regulation by methylation of the cytosines in a promoter would be considered
A: Answer - Option B - Transcriptional regulation
Q: Gene expression is initiated largely in response to changes in the ____________________________ in…
A: Gene expression in prokaryotes - It includes both the process transcription as well as translation…
Q: Which of the following causes epigenetic modifications to DNA that affects gene expression without…
A: Epigenetic DNA modifications are inhertable.
Q: Regulation of gene expression is necessary because: A) all cells do not need to express all genes…
A: Gene expression is the process by which the instructions in our DNA are converted into a functional…
Q: Different patterns of activator and repressor binding the enhancer and silencer sequences,…
A: Gene expression is the process through which information stored in our DNA is translated into…
Q: A researcher has just identified a new protein in bacteria that binds DNA near the promoter of a…
A: DNA (deoxyribonucleic acid) was discovered by Friedrich Miescher. Nucleotides are the structural…
Q: A binding site for RNA polymerase is called a .a. gene c. codonb. promoter d. protein
A: Transcription is a process in which one strand of DNA known as template strand is known as converted…
Q: Which level of gene expression regulation is used in eukaryotes, but not bacteria? transcription…
A: Regulation refers to the controlling of the gene expression.
Q: Sometimes a transcription factor within the cytoplasm can act as an intracellular receptor for a…
A: Transcription factors are the proteins that help in recognizing the promoter region of a gene and…
Q: Which of the following is a DNA element that instructs RNA polymerase where to bind on DNA?a)…
A: Transcription and translation are the two processes that are involved in the central dogma of…
Q: A signaling pathway causes a transcription factor binding to a particular promoter. What effect does…
A: Answer- Signaling transduction is the process by which any specific external physical or chemical…
Q: ct one: a The gene is turned off, but still expresses a protein product. . The gene becomes…
A: DNA methylation is associated with the silencing of gene expression.
Q: Genetic manipulation causing expression of a particular gene in an organism that normally does not…
A:
Q: Which of the following is NOT a regulatory DNA sequence? Origin Promoter Repressor
A: A regulatory sequence is defined as a DNA sequence capable enough to affect the expression of…
Q: Which level of gene regulation is involved when more polypeptides are synthesized from a given mRNA…
A: Transcription: It is a process of synthesis of mRNA transcript from DNA template by the enzyme RNA…
Q: In bacteria sigma factors: 1. Transcript factors 2. Specialized subunit of the core enzyme 3.…
A: In prokaryotic (bacteria) transcription process the RNA polymerase perform the synthesis of RNA…
Q: female calico cat has patches of black and white due to random x-chromosome inactivation a.…
A: * Calico cats are always femal and they will displays red and black based colors depends on which…
Q: Insulator regions make sure that A. genes are protected from transposon insertions B. genes are…
A: Gene is the basic unit of inheritance in the DNA of organisms. They have a specific role in an…
Q: Fill in the blanks. In this schematic, [] represents a gene (DNA) that is transcribed and processed…
A: Transcription is a significant process that occurs in a cell through which the RNA is synthesized…
Q: Which level of gene regulation is involved when alternative sigma factors change the recognition of…
A: Alternative sigma factor in association with core RNA polymerase provide a mechanism of cellular…
Q: Repressors bind toa) Promoterb) Enhancerc) Operatord) Hormone response element
A: A repressor is a protein that can bind to DNA or RNA and inhibits gene expression. The DNA-binding…
Q: Which of the following is an example of positive control? (a) transcription occurs when a repressor…
A: A positive control is described as an integral part of an experimental that has a tendency to…
Q: karyotic regulation of gene expression occurs at the level of _____ transcription splicing and…
A: Given: Need to explain the Eukaryotic regulation of gene expressions
Q: The attenuator is an important regulatory sequence that influence gene expression. The attenuator…
A: Attenuation is a type of gene regulation in bacteria used to ensure proper Transcription and…
Q: The binding of the inducer to the repressor causes the repressor to O bind to the operator. O stop…
A: Lac operon is a type of gene expression in prokaryotes. There are genes that code for different…
Q: Gene expression is the process by which the DNA directs the synthesis of proteins. In eukaryotes, it…
A: Gene expression is the biological process, in which the data from a gene is used to synthesize a…
Q: During RNA splicing
A: Answer: TRANSCRIPTION : It is the process of central dogma where DNA is transcribed in to RNA using…
Q: Cells use different mechanisms to sense and respond to changes in intracellular versus extracellular…
A: Cells behave differently to extracellular changes such as temperature, pH, or nutrients. Cells works…
Q: Repressor molecules bind toa) Operatorb) Promoterc) Enhancerd) Hormone response element
A: An operon has certain regulatory sequences that help in the regulation of transcription. They can…
Q: Which of the following cis regulatory elements are present in the pre-MRNA sequence? SRs hnRNPs ESES…
A: RNA editing and splicing are the two major techniques that dynamically regulate human transcriptome…
Q: Which level of gene regulation is involved for some genes with higher gene copy number? O genome…
A: ANSWER;-Transcriptional Explain;- Gene regulation alludes to the instruments that act to induce or…
Q: 85 __________ is the sequence motif located downstream from the Inr core promoter motif. A. BRE b.…
A: 85 __________ is the sequence motif located downstream from the Inr core promoter motif. A. BRE b.…
Q: Which of the following is involved in pre-transcriptional gene regulation? a.) alternative splicing…
A: Transcription is a process of converting the genetic information in the DNA to RNA in the nucleus of…
Q: Binding of______ to_______ in DNA can increase the rate of transcription of specific genes. a.…
A: Transcription is a process in which one strand of DNA known as template strand is known as converted…
Q: The basal transcription factor that recognizes the TATA, Inr, MTE, and DPE core promoter elements is…
A: Since you have asked multiple question, we will solve the first question for you. If you want any…
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- The oscillatory clock that drives somite forma-tion in vertebrates involves three essential componentsHer7 (an unstable repressor of its own synthesis), Delta (atransmembrane signaling molecule), and Notch (a trans-membrane receptor for Delta). Notch is bound by Delta onneighboring cells, activating the Notch signaling pathway,which then activates Her7 transcription. Normally, thissystem works flawlessly to create sharply defined somites(Figure Q21–2A). In the absence of Delta, however, onlythe first five somites form normally, and the rest are poorlydefined (Figure Q21–2B). If a pulse of Delta is suppliedlater, somite formation returns to normal in the regionswhere Delta was present (Figure Q21–2C). A diagram ofthe connections between the components of the clockand how they interact in adjacent cells is shown in FigureQ21–2D. In the absence of Delta, why do the cells becomeunsynchronized? What is it about the presence of Deltathat keeps adjacent cells oscillating in synchrony?This is one given problem on my homework assignment for developmental biology. Thank you for the help!Describe the effects of FGF and RA on each other in limb bud development. Give a specific example of their effects on each other in this capacity. Knowing this, propose a question/hypothesis to investigate the mechanism of how a specific morphogen controls pattern if you know that the morphogen is both necessary and sufficient AND is expressed in the correct spatial/temporal frame.Expression of a homeotic gene in the wrong tissue inDrosophila results in the development of an inappropriatebody part from that tissue. Explain why this happens andhow it shows that homeotic genes are positive regulators ofdevelopmental pathways.
- Using specific molecular evidence, elaborate on the remark "oocyte activation entails inactivation."How would signaling between two cells e affected by the following mutation: occludes (NA) (obtains new function that induces large gaps)I. The retinoic acid receptor (RAR) is a transcription factor that is similar to steroid hormone receptors. Thesubstance (ligand) that binds to this receptor is retinoicacid. One of the genes whose transcription is activatedby retinoic acid binding to the receptor is myoD. Thediagram that follows shows a schematic view of theRAR proteins produced by genes into which one oftwo different 12-base double-stranded oligonucleotides had been inserted in the ORF. The insertion site(a–m) associated with each mutant protein is indicatedwith the appropriate letter on the polypeptide map.For constructs encoding proteins a–e, oligonucleotide 1(5′ TTAATTAATTAA 3′ read off either strand) wasinserted into the RAR gene. For constructs encoding proteins f–m, oligonucleotide 2 (5′ CCGGCCGGCCGG 3′)was inserted into the gene.NH2 f g h i j k l m COOHa b c d eThe wild-type RAR protein can both bind DNA and activate transcription weakly in the absence of retinoic acid(RA) and strongly in RA’s presence. Each…
- The of satellite cells in the skeletal muscles can be found as a dispersed population of stem cells throughout the muscle tissue. in the blood sinusoid area of the muscle tissue concentrated in the tendon in the islets of Smithiton none of theseA neuron must reach threshold to fire an action potential. In this context, threshold refers to which event? a. voltage at which damage occurs to the membrane because of the electrical charge b. the voltage at which potassium ions begin to flow in and out of the cell c. the voltage at which voltage-gated sodium channels open d. the voltage at which the neuron can no longer produce an action potential According to studies in developing rodents, testosterone treatment causes detectable changes in: a. the sex region Y gene b. the thalamus c. the hypothalamus d. alpha-fetoproteinA neuronal precursor in a fly embryo expresses which molecule to signal neighboring cells not to become neurons (Choices are shh, delta, noggin, notch)
- When a signal binds to the Tyrosine kinase receptor (RTK), you have studied that a list of events occur sequentially. Map the events in the correct order from 1st to the last step.We know quite a bit about Notch/Delta and Hes gene oscillations during embryonic development. What do oscillations of these genes in the adult neural stem cell niche actually look like? How do these oscillations result in the progression from stem cell to neuron?Put the following steps in the correct orderedsequence.a. kinase cascadeb. activation of a transcription factorc. hormone binds transmembrane receptord. expression of target genes in the nucleuse. Ras molecular switch