Epigenetic modification of gene expressiona. always inhibits gene transcription.b. always stimulates gene expression.c. is erased from the DNA following mitotic cell division.d. may sometimes be transmitted from generation to generation.
Q: Define epigenetic inheritance
A: Epignetic markers in the cell occurs in the form of DNA methylation, histone tail modifications like…
Q: Suppose a gain-of-function mutation happens in an oncogene. Which of the following changes is likely…
A: Cancer causing gene is known as oncogenes and its an abnormal active gene which promotes growth of…
Q: Q7
A: Epigenetic changes include all except Change in DNA sequence. Epigenetic changes are modification in…
Q: Describe epigenetic inheritance and provide an example.
A:
Q: Suggest a direct experiment to prove that p53 binding at gene promoters affects the level of gene…
A: p53 is a protein responsible for tumor suppression and helps in regulation of the overgrowth of…
Q: Several new cancer drugs inhibit the enzymes that either put acetyl groups on histones or take them…
A: Cancer in simple term can be referred to a set of diseases which are caused by the production of an…
Q: Define epigenetics. Write about epigenetic modification.
A: Epigenetics is the study of how behaviour and environment may influence gene function.
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: Which Is not one of the ways that a proto-oncogene can become converted into an oncogene? O…
A: A proto oncogene is a type of gene which is responsible for suppression of tumor example is p53 Its…
Q: Epigenetic control of gene expressiona. is hereditary. c. adds methyl groups to cytosine.b. locks…
A: Stem cells are cells that can grow not other cells in the body. Stem cells are of two types one is…
Q: Epigenetics has been described as “inheritance, but not as we know it.” Do you think this is a good…
A: Epigenetics is the process of inheritance by mechanisms other than through the DNA sequence of…
Q: Excess exposure to the sun can lead to skin cancer due to mutations in the DNA of your skin cells.…
A: Answer. When a normal dividing cell lost its control over its division, differentiation and…
Q: Go to the PubMed website and search the words epigenetic and cancer.Scan through the journal…
A: Ans: Epigenetics: It is the study of heritable changes in expression of genes without changing the…
Q: Explain how DNA methylation can regulate gene expression in a tissue-specific way. When and where…
A: Introduction Expression of gene is highly under control by various mechanisms such as histone…
Q: Aristotle considered two opposing theories for development: Describe what is meant by these two…
A:
Q: Describe how the generation of functional beta cells from stem cells requires an extensive knowledge…
A: Beta cells produce insulin, a hormone that regulates the amount of glucose (a form of sugar) in the…
Q: In chapter 8 we read that in tumor cells Rb protein is hyperphosphorylated. In response to that,…
A: p53 suppresses the cell proliferation mediated by the Rb-E2F pathway. Phosphorylation of Rb by…
Q: Which of the following statements is incorrect? a. Some gene expression patterns can be passed to an…
A: The epigenetic regulation of gene expression is considered a very common process. This plays a major…
Q: Explain how regulation of gene expression can altergene function
A: Genes are the structural and functional units of heredity. Genes carry deoxy ribo nucleic acid…
Q: Based on my your observations, describe the role of the transcription factors and the regulatory…
A: Central dogma involves a method where RNA formed from DNA , and DNA shows heterocatalytic neture,…
Q: Explain what epigenetics is? Please explain the role of epigenetics in vernalization.
A: Growth and development are modulated by environmental signals in many organisms. These signals are…
Q: Which of the following is NOT a description of an epigenetic modification? A. regulatory patterns…
A: Changes in gene expression that are not produced by changes in DNA sequences but are caused by…
Q: How can environmental agents that do not cause gene mutationscontribute to cancer? Would these…
A: A gene is a particular sequence of nucleotides in RNA or DNA that is generally located on a…
Q: Which of the following processes is an example of an epigenetic effect (meaning not originating in…
A: Genes are very much crucial in regulating the health of the body and behavior of an individual which…
Q: Transcription factors such as myoD control gene expression in which of the following ways? Group of…
A: MyoD, also known as myoblast determination protein, is a protein found in mammals that regulates…
Q: mutations in breast cancer susceptibility genes BRCA1 & 2 principally cause with ? (a) nucleotide…
A: BRCA1 gene mutations lead to breast cancer in women of around 60% to 80%. Along with that it also…
Q: In your own words, explain epigenetics. What is it? What are the main epigenetic marks? What do they…
A:
Q: Which of the following is not a major mechanism of epigenetic change? a. DNA methylation b.…
A: Deoxyribonucleic acid (DNA) is a double-stranded molecule. DNA replication is the process by which…
Q: Epigenetic changes maya. be programmed during development.b. be caused by environmental changes.c.…
A: Gene is a specific nucleotide sequences in RNA or DNA. It is generally located on a chromosome. The…
Q: mutation in p53 promoter that prevents p53 from being expresses Causes? Why? A. Increased…
A: Cancer is a condition in the body where cells in particular tissues lose the function of apoptosis…
Q: The underlying cause(s) of epigenetic changes associated withcancer may bea. mutations in genes that…
A: Epigenetic changes refer to those deoxyribonucleic (DNA) modifications that do not involve any…
Q: Which one of the following describes an epigenetic modification? O A point mutation in the coding…
A: A methyl group bound to DNA inhibit transcription of gene. This sentence denotes an epigenetic…
Q: Explain DNA methylation. How does this process influence cellular function?
A: DNA methylation is a process in which Dna bases are Methylated with the help of enzyme Methyl…
Q: You observe that a particular gene is being transcribed during development. How can you tell whether…
A: The chromosome contains a number of genes that encode proteins and these genes when expressed in the…
Q: Define Epigenetic changes. Are epigenetic changes the same thing as mutations? Explain why or why…
A: MUTATION It is a change in a DNA sequence. Mutations can result from DNA copying mistakes made…
Q: How may genes play a role in the susceptibility of inheriting cancers? The reproductive system…
A: Cancer is a disease in which the body's cells grow out of control and spread to other tissues. Any…
Q: Epigenetics is the study of the molecular mechanisms bywhich___________ trigger or block genetic…
A: The study of how cells influence gene activity without modifying the DNA sequence is known as…
Q: From the list of answers (A-D) below, select the correct anwer(s). There may be more than one…
A: Epigenetic is the study of how your behavior and environment can cause changes that affect the way…
Q: Gene expression does not vary by_______ . a. cell type c. stage of development b. extracellular…
A: Gene expression is defined as the process wherein genes are read/translated using process-specific…
Q: The epigenetic modifications can take pla a. Germ cells O b. Cancer cells O c. Stem cells O d.…
A: Since you have posted a question with multiple parts, we will solve the first subparts for you. To…
Q: Epigenetic phenomena involve DNA methylation and a) gene inversions Ob) chromosomal rearrangements…
A: DNA methylation and histone acetylation controls epigenetic modifications through a reciprocal…
Q: Explain the theory of epigenesis
A: Developmental biology is the branch of biology that deals with the processes involved in the growth…
Q: Define epigenetics and epigenetics inheritance.
A: The study of hereditary mechanisms is called genetics. The study of various changes caused by…
Q: In one cell, gene C is expressed, whereas in another cell, geneC is inactive. After the cells are…
A: Epigenetics is defined as the study of heritable phenotypic changes but it does not change the DNA…
Epigenetic modification of gene expression a. always inhibits gene transcription. b. always stimulates gene expression. c. is erased from the DNA following mitotic cell division. d. may sometimes be transmitted from generation to generation. |
Step by step
Solved in 2 steps
- Which of the following statements concerning p53 is NOT correct? O a. p53-dependent transcription of target genes leads to cell cycle arrest or cell death (apoptosis). O b. O C. Loss of p53 function results in loss of checkpoint controls. Loss of p53 function creates an environment that is permissive for genome instability--that is, more damaged cells with chromosome aberrations and mutations survive and propagate. d. p53 is a tumor suppressor protein which is largely responsible for protecting cells from cancer- causing DNA-damaging agents.Epigenetic control of gene expressiona. is hereditary. c. adds methyl groups to cytosine.b. locks genes “ON.” d. Two of theseControl of gene expression in eukaryotic cells occurs at which level(s)? a. only the transcriptional level b. epigenetic and transcriptional levels c. epigenetic, transcriptional, and translational levels d. epigenetic, transcriptional, post-transcriptional, translational, and post-translational levels
- Post-translational control refers to: a. regulation of gene expression after transcription b. regulation of gene expression after translation c. control of epigenetic activation d. period between transcription and translationTranslational control of gene expression occurs within thea. nucleus.b. cytoplasm.c. nucleolus.d. mitochondria.Epigenesis relating to genetics refers to which of the following A. Genetic information is limited to what we inherit only from our biological parents. B. Genes are not influenced by environmental factors. C. Genes we inherit are fully expressed at birth. D. Genes are turned on or off as needed, by the developing body or environmental triggers, across the life-span
- In mice, the copy of the Igf2 gene that is inherited from the mother isnever expressed in her offspring. This happens because the Igf2 genefrom the mothera. always undergoes a mutation that inactivates its function.b. is deleted during oogenesis.c. is deleted during embryonic development.d. is not transcribed in the somatic cells of the offspring.Epigenetics works by Select one: a. activating DNA ligases so they can clip attached methyl groups off. O b. activating DNA polymerases so thymine is more readily attached to the lead gene. c. blocking the cell's ability to read certain genes. O d. blocking the cell's ability to undergo cytokinesis.The protein that ensures the fidelity of DNA replication is the a. tumor repressor P53 protein. b. Mitotic arrest deficient protein. c. transcription factor E2F protein. d. Ataxia telangiectasia mutated protein.
- 1. True or Flase: Cells must only divide when they receive a signal to divide. 2. BRCA1 is a gene that codes for a tumor suppressor protein. If a person inherits a mutation in BRCA1, it greatly increases his or her risk of developing breast cancer. Are the cancer-causing mutations in the BRCA1 gene more likely to: a) increase expression of the gene b)decrease expression of the gene c)not affect the expression of the geneDescribe the steps by which the TP53 gene responds to DNA damage and/or cellular stress to promote cell-cycle arrest and apoptosis. Given that TP53 is a recessive gene and is not located on the X chromosome, why would people who inherit just one mutant copy of a recessive tumor-suppressor gene be at higher risk of developing cancer than those without the recessive gene?When p53 is activated, a cell cannot progress: A. throught M-phase B. from G2 into M phase C. From G1 into S phase D. Throught S-phase E. from s-pahse into G2