What is the relationship between methylation and genomic imprinting? O Differential methylation of DNA in males and females results in only one of the parental alleles being transcriptionally active in the offspring Reversible methylation of DNA inherited from the mother results in the maternal alleles being expressed early in development DNA methylation silences the alleles inherited from both parents, so no alleles are transcriptionally active. Reversible methylation of DNA inherited from the father results in the paternal alleles being expressed only late in development

Q: The Xist transcript on the X chromosome is thought to be part of an RNAi mechanism controlling the…

A: A designated transcript is not directly refuted by the Xist transcript. It is part of a more…

Q: Some animals like C. elegans, do not have 5-methylcytosine, but do have methylated adenine. It is…

A: DNA methylation is known as epigenetic mechanism. It occurs when a methyl group is added to DNA and…

Q: Which of the following i O Once DNA replicates, e It is not impacted by to OIt "keeps track" of prev…

A: Epigenetic changes are genetic modifications that impact gene activity without changing the DNA…

Q: Explain how methylation of cytosine nucleotides can affect gene expression in one way. Explain how…

A: DNA is a polymer made up of a nucleotide monomer. The double strands of the DNA are joined through a…

Q: The CTCF protein is involved in the regulation of the Igf2-H19 gene cluster. Which of the following…

A: The gene expression involves transcription and later translation. Different mechanisms are involved…

Q: How do epigenetic marks compare in monozygotic twins? They stay the same throughout their lives…

A: Zygote is formed by fusion of male and female gametes. This process of fusion of gametes is…

Q: eukaryotes control transcription

A: Transcription in the eukaryotic cells is controlled by various ranges of regulation in which the…

Q: DNA methylation is associated with repression of mammalian genes involved in development and…

A: Epigenetic modification is the process by which DNA and histone proteins are chemically modified.

Q: Genomic imprinting, where gene expression is based on the sex of the transmitting parent,…

A: Question - Genomic imprinting , where genes expression is based on the sex of the transmitting…

Q: What are the advantages of using the T7 polymerase to control expression?

A: The T7 RNA polymerase system offers precise control over gene expression with high specificity,…

Q: So the death of dolly the cloned sheep  would it have been due to the  lack of reversing epigenetic…

A: DNA methylation and histone acetylation both have roles in regulating transcription at the time of…

Q: Describe P element transformation in Drosophila?

A: Introduction  Transposons are the short highly repeated DNA sequence present in heterochromatic…

Q: Identify the levels at which gene expression can be regulated in prokaryotes and eukaryot Which of…

A: The gene is a sequence of nucleotides that encode a specific protein. The gene expression is…

Q: Eviction of histones will cause adecrease in the compaction of the genomic DNA and therefore lead to…

A: The genome in Eukaryotes is huge and is compactly packed within the nucleus. Thus, packing of DNA is…

Q: Enzymes that catalyze RNA-directed DNA synthesis are called ______. A(n)__________ is an enzyme that…

A: Introduction :  One of the initial steps in gene expression is transcription. The transit of genetic…

Q: Assume researchers are able to isolate the intact mRNA for a gene called qrs. The qrs mRNA isolated…

A: Messenger RNA is synthesized with the help of RNA polymerase taking the help of template strand of…

Q: For gene expression profiling, what does a microarray or “gene chip” measure directly? Group of…

A: Microassay is technology-based upon the fact that a complementary sequence of DNA can be used to…

Q: A female honeybee larva becomes worker instead of queen because of: OHDAC (histone deacetylase) O…

A: Introduction Honey bee are of three types adult bees: workers, drones, and a queen. Worker bees help…

Q: Which cytosines could be methylated in a typical mammalian genome? Why? 5’-GCCGCGC-3’

A: DNA is the genetic material in living organisms that contain two polynucleotide trends. DNA contain…

Q: Methylation of H3K9 by itself silences genes, but if H3K4 and H4K20 are also methylated, the…

A: Histones are the basic proteins that are employed in nucleosome formation during the chromatin…

Q: At the molecular level, how do you think a gain-of-function mutation in a developmental gene might…

A: Mutations are referred to as the sudden heritable changes in the deoxyribonucleic aid of an…

Q: A disease is caused by having no functional protein produced from the kip gene. An individual has…

A: Mutations are alterations in the DNA sequence of an organism. Small changes, such as adding or…

Q: Geneticists have been exploring ways to suppress the expression of the extra chromosome 21 in…

A: Chromosomes are a compact form of DNA wrapped around some proteins and are generally present in a…

Q: Which of the following can be the result of different gene expression? Different phenotypes between…

A: Regulation of gene expression is the mechanism by which the genes are switched off or on depending…

Q: Fruit flies with DNA transposons known as P elements are known to have 1.gene silencing factors in…

A: P elements - these are transposable elements  that were discovered in drosophilia as the causative…

Q: Briefly explain how or why making a region of DNA heterochromatic results in little or no expression…

A: DNA consists of two regions euchromatin and heterochromatin. heterochromatin are darkly stained…