Which of the following scenarios will cause the maternal X chromosome to condense into a Barr body? Select all that apply. Histone deacetylation of the promoter region of paternal Xist gene O DNA methylation of the promoter region of paternal Xist gene O Gain-of-function mutation in the repressor of Xist transcription O Transcriptional repression of the maternal Xist gene O Deletion of Xist promoter on maternal X chromosome O Deletion of XIC on maternal X chromosome

Q: he Drosophila oocyte/embryos A-F show the expression patterns of various mRNAs.  Which is the…

A: Fruit flies, or Drosophila melanogaster, have led to significant research as model organisms in…

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: What would be the likely phenotypic effect of a mutation in HOTAIR and prevented it from binding to…

A: HOTAIR (HOX antisense intergenic RNA) is a long non-coding RNAs with 6 exons and 2158 nucleotides…

Q: A Drosophila egg that is bed lbcd may develop normally, but the adult fruit fly will not be able to…

A: Bicoid genes The bicoid gene or the bcd genes in drosophila are important genes that control the…

Q: YODA, the protein involved in the very first division in the zygote of Arabidopsis and in…

A: The words "elongated" and "shortened" expression are used in the context of genetic interactions and…

Q: You are studying how gene transcription gets started in eukaryotes. Which of the following…

A: Transcription factors are protein molecules which bind to specific DNA sequences to regulate gene…

Q: Replacement of histones with variant histones will cause an increase in the compaction of the gell…

A: Answer: Histone : These are the Octameric proteins around which DNA winds to form a structural unit…

Q: Which of these pairs of clinical applications of DNA repair mechanisms is not accurate? Group of…

A: To correct the DNA damage within cells, the cell uses various cellular repair mechanisms called DNA…

Q: st noncoding RNA (ncRNA) triggers X inactivation by coating the X chromosome that produces it and by…

A: Xist is a long non-coding RNA on the X chromosome. Xist acronym is X -inactive-specific transcript…

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: Occasionally, a mouse X chromosome is broken into two pieces and each piece becomes attached to a…

A: Introduction One Of Two Sex Chromosomes Is The X Chromosome. The X And Y Chromosomes Are Found In…

Q: Which of the following is a method to reprogram a cell to de-differentiate fibroblast into a…

A: De-differentiation of fibroblast cells into pluripotent stem cells.

Q: eukaryotes control transcription

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

Q: Name the lambda promoters whose expression is regulated by the cro protein. For each promoter you…

A: CI represses cro and Cro represses cI. This is referred to as the double-negative feedback loop and…

Q: Explain why the glucocorticoid receptor binds next to the core promoter of some genes, but not next…

A: Glucocorticoids are corticosteroids that are a class of steroid hormones. They are the…

Q: A cloned gene fragment contains a regulatory element that isrecognized by a regulatory transcription…

A:

Q: You have been analyzing wing development mutants in Drosophila and have collected the…

A: Gene masking is simply a genetic algorithm that builds a template for a chromosome, called a mask,…

Q: Testosterone is a hormone that affects gene expression. Only some cells in your body are affected by…

A: Testosterone is a type of hormone released by the human body. It’s essentially synthesized in men by…

Q: A which is involved in the silencing of the y-globin gene, is rendered inactive. CL11A is a Land a…

A: Gene silencing is a negative feedback process that controls gene expression and metabolism…

Q: tatement about the HATS is FALSE? do not interact with non-pioneer regulatory transcription facto…

A: HATs : Histone acetyl transferases. These are the enzymes that acetylate conserved lysine residuals…

Q: Which of the following applies to the female sex determination in Drosophila melanogaster fruit…

A: Sex-lethal (Sxl) is the master switch gene for somatic sex determination in Drosophila melanogaster.…

Q: Based on the information in Figure 12-6, how doesGal4 regulate four different GAL genes at the…

A: The gal operon is a prokaryotic operon that codes for galactose metabolism enzymes. Lactose…

Q: Transgenic mice would be expected to have all of the following characteristics EXCEPT: Contain the…

A: A transgenic animal is an animal that expresses an exogenous gene. Transgenic animals are used for…

Q: Indicate whether the protein binds directly or indirectly (assuming it does) to DNA and whether to…

A: Introduction :- DNA acts the genetic material of the cell because it have all the genetic…

Q: 8. Yeast genes have cis-acting elements upstream oftheir promoters, similar to enhancers, called…

A: Yeast genes have cis-acting elements upstream of their promoters and are similar to enhancers, which…

Q: what prevents any enhancer on a chromosome from influencing any promoter for any gene anywhere on…

A: A promoter is a region on DNA to which the proteins that initiate transcription of a single RNA from…

Q: Chromosomal translocation can result in cells expressing a fusion protein with uncontrolled receptor…

A: The correct answer is Tel/PDGFR

Q: Propose a model that outlines, step-by-step, events that could reasonably generate the expression of…

A: The "Eve stripe protein" refers to a specific protein called "Even-skipped" (Eve) that is involved…

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: According to the scenario shown, how many segments of DNA (one, two, or three) are removed during…

A: Genetics is the branch of biology which deals with genes, heredity, and genome in the organism.…

Q: HAT48 is a histone acetyltransferase that binds DNA next to the promoter of the OVU3 gene. Likely,…

A: Acetyltransferases are the enzymes that catalyze the transfer of acetyl groups. Histones are the…

Q: What is dominant control mechanism of gene expression? explain the following image.

A: Dominant alludes to a connection between two adaptations of a gene. In case one is dominant, the…

Q: Please note that Hrb27C is a gene located on chromosome 2L and FRT40A refers to an FRT sequence…

A: Approach to solving the question: To solve the question, it is essential to understand the…

Q: Which of the following is not true? ○ In a somatic cell, imprinted genes are not expressed because…

A: Here's the analysis of each statement:In a somatic cell, imprinted genes are not expressed because…

Q: For each of the terms in the left column, choose thebest matching phrase in the right column.a.…

A: Gene is the specific sequence of nucleotide in deoxyribonucleic acid (DNA) or ribonucleic acid (RNA)…

Q: The transcription of a gene called YFG (your favoritegene) is activated when three transcription…

A: An enhanceosome is a group of trans-acting factors that assemble at an enhancer region of a gene to…

Q: Predict what would be the consequence on X inactivation of adding siRNAs that eliminate the product…

A: Long non-coding RNA Jpx (Jpx RNA) is essential for the inactivation of the X chromosome. It…

Q: In class, we discussed the regulation of expression of the Trp biosynthesis enzymes. These are the…

A: When RNA polymerase binds to a DNA molecule, transcription can begin. This binding takes place at…

Q: Q1. (Shown below is the structure of a Drosophila gene, divided into 10 segments, designated A-J.…

A: The two steps of gene expression are transcription and translation. After transcription, the primary…

Q: 13. Two transcription factors, A and B, are required to bind an enhancer, E, in order for Gene X to…

A: Enhancers are the proteins required to accelerate the chances of a gene to get transcribed, but it…

Q: In addition to the effect on ribonucleotide reductase, hydroxyurea causes changes at the gene…

A: In each living cell, ribonucleotide enzyme (RNR) may be a crucial catalyst that facilitates the…

Q: Looking at Figure 11-9, why were partial diploids essential for establishing the trans-acting nature…

A: Partial diploids have led to the possibility in order to determine which type of alleles have a…

Q: In eukaryotes, transcription factor activators bind to their enhancer elements and interact with RNA…

A: Transcription factors These factors are responsible for the process of transcription. These proteins…

Gene Interactions

When the expression of a single trait is influenced by two or more different non-allelic genes, it is termed as genetic interaction. According to Mendel's law of inheritance, each gene functions in its own way and does not depend on the function of another gene, i.e., a single gene controls each of seven characteristics considered, but the complex contribution of many different genes determine many traits of an organism.

Gene Expression

Gene expression is a process by which the instructions present in deoxyribonucleic acid (DNA) are converted into useful molecules such as proteins, and functional messenger ribonucleic (mRNA) molecules in the case of non-protein-coding genes.