Immortality of Stem cells is supported by the expression of telomerase that can extend the telomere sequence. However, one daughter cell created by division of stem cells will not be immortal due to lack of telomerase expression. What difference will you expect in regulation of the telomerase coding gene between the two daughter cells produced by cell division of stem cells? How might the cells be different in terms of chromatin structure at that loci?

Q: Much of DNA methylation in eukaryotes occurs at CpG dinucleotides, but some individual cytosine…

A: Epigenetics of gene expression allows heritable changes in gene expression without altering the DNA…

Q: The human hexokinase enzyme has the same function as the bacterial hexokinase enzyme but is somewhat…

A: Promoters are upstream regions of a gene that are used to initiate and control gene expression. The…

Q: Early in development, most human cells turn off expression of an essential component of telomerase,…

A: Telomeres are complex nucleoprotein structures present in the tips of the chromosomes which protects…

Q: Glenn Croston and his colleagues studied the relation between chromatin structure and transcription…

A: Glenn Croston with his colleagues measured the level of invitro transcription of the gene in a…

Q: expression of recombinant proteins in yeast is an important tool for biotechnology companies that…

A: The gene of interest is taken out from one group of organisms and inserted into the host cell of a…

Q: In yeast cells, telomerase remains active and maintains telomeres of about 300 base pairs. Propose…

A: Telomeres play a very important role in preserving our genome information.

Q: Mutations in genes encoding chromatin-remodeling complexes have been identified in high frequencies…

A: A mutation is a change that occurs in the deoxyribonucleic acid (DNA)when it is damaged or changed…

Q: A eukaryotic gene contains 14 exons. Most of the transcripts from this gene contain all 14 exons,…

A: Introduction :  Different combinations of exons of same gene when combined and produce different…

Q: Histone methylation can have many different effects on gene expression. In some cases, histone…

A: Expression of gene is highly under control by various mechanisms such as histone modification which…

Q: Many of the gene products involved in DNA synthesis were initially defined by studying mutant E.…

A: During DNA replication another copy of DNA is synthesized on DNA template strand using Polymerase…

Q: Sometimes, cDNAs turn out to be “chimeras”; that is, fusions of DNA copies of two different mRNAs…

A: c dna is complementary dna.

Q: Expression of recombinant proteins in yeast is an important tool for biotechnology companies that…

A: Telomeres are the caps at the end of each strand of DNA that protect the chromosomes, like the…

Q: E. coli strains diploid for the lac region were constructed by introducing a plasmid carrying the…

A: ANSWER;- I- mutation- repressor is unable to bind to the operator region. If there is no other…

Q: Much of DNA methylation in eukaryotes occurs at CpG dinucleotides, but some individual cytosine…

A: The most common epigenetic change is methylation in which a methyl group is added to the DNA…

Q: A plant geneticist was examining the inversion mutation XI 501 in barley where a segment of DNA is…

A: Any alteration occurring in the DNA sequence of an organism is known as mutation.

Q: With age, somatic cells are thought to accumulate genomic "scars"as a result of the inaccurate…

A: Answer given below..

Q: The coding sequences of Gene F and Gene G are shown by the double-stranded DNA below. Using the…

A: Genetic codes are stored in the form of trinucleotide sequences (codons) in the mRNA.The mRNA gets…

Q: In studies on chromatin it has been reported that DNA that is being actively transcribed is more…

A: DNA- “deoxyribonucleic acid” is a complex structure that carries the unique genetic code of every…

Q: To identify the following types of genetic occurrences, would acomputer program use sequence…

A: Introduction  With the advancements of Bioinformatics tools and sequencing techniques we can easily…

Q: Describe constitutive heterochromatin and facultative heterochromatin. Based upon this information,…

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Q: Let us suppose that a vertebrate organism carries a mutation that causes some cells that normally…

A: The addition of methyl groups into DNA molecule is called DNA methylation. The activity of the DNA…

Q: 1)A. how do you read a sequence of DNA (template or non-template strand) to convert it an mRNA…

A: *NOTE: Kindly repost for other questions. Dear Student as per the guidelines we are supposed to…

Q: Refer to figure, which shows the distribution of histone H2A.Z on nucleosomes near a transcription…

A: The DNA is compactly packed in the nucleus because of the presence of the histone proteins which are…

Q: Expression of recombinant proteins in yeast is an important tool for biotechnology companies that…

A: Recombinant proteins are those proteins that are produced by recombinant DNA cloned in a system…

Q: The enzyme telomerase is part protein and part RNA. What would be the most likely effect of a large…

A: Introduction  Ageing of cells can be attributed to several factors such as degradation of cellular…

Q: In humans, the average length of a gene on chromosome 7 is 69,000 base pairs, but the average mRNA…

A: DNA( deoxyribonucleic acid) is the double-stranded molecule that is the genetic material in most…

Q: yeast cells, telomerase remains active and maintains telomeres of about 300 base pairs. Propose what…

A: The end areas of chromosomes are called telomeres , are repetitive sequence that protect gene from…

Q: Transposable elements, “jumping genes”, were first described by Barbara McClintock in her Nobel…

A: Transposable elements are generally known as jumping genes that are DNA sequences that move from one…

Q: Describe the function of telomere repeat-binding factors.

A: Telomeres are the ends of chromosomes. they are made up of short repetitive sequences and prevent…

Q: Unlike linker DNA and deproteinized DNA, DNA segments wrapped around histone cores are relatively…

A: Nuclease can digest nucleic acid.

Q: n yeast cells, telomerase remains active and maintains telomeres of about 300 base pairs. Propose…

A: Deletion is a type of mutation in the DNA (deoxyribonucleic acid) that…

Q: In this scenario, we'll be discussing the Xtina gene, which encodes the Xtina protein. Xtina is…

A:

Q: In yeast cells, telomerase remains active and maintains telomeres of about 300 base pairs. Propose…

A: Telomerase is an enzyme that helps to build the telomere region by adding guanine-rich bases. It is…

Q: One histone modification that is seen consistently inmany species is the addition of an acetyl group…

A: Introduction: Histone is a type of protein that functions to support the chromosome structure.…

Q: What factor might potentially determine the length of the flanking direct repeats that are produced…

A: Flanking or terminal repeats are the sequences DNA that are repeated on the both ends of a sequence…

Q: If a section of a chromosome is heavily methylated, which of the following is likely to be true?…

A: DNA methylation is a process that is used during gene expression. There have many other options for…

Q: determine the approximate number of amino acids that would be missing in the telomerase protein of a…

A: Dyskeratosis congenita is an inherited human disorder characterised by decreased telomerase…

Q: You want to clone a eukaryotic gene and express the corresponding protein in yeast. However, the…

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Q: DNA supercoiling, which occurs when coiling tension is generated ahead of the replication fork, is…

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Q: #3) Ligase catalyzes a reaction between the 5' phosphate and the 3' hydroxyl groups at the end of…

A: DNA ligase is an enzyme that ligates two DNA fragments with the help of the phosphodiester bond. Its…

Q: Since eukaryotic chromosomes are assembled with histone proteins, how are replication and…

A: Eukaryotes are the organisms that contain a nuclear membrane covering the nucleus. But the…

Q: Which structure in the eukaryotic chromosome is about 700-840 nm in diameter, contains scaffold…

A: One solenoid is composed of 6 nucleosomes. It is defined as a packaging material of DNA and is a…

Q: Assume that there is a double stranded break on DNA double helix of an eukaryotic cell due to X-ray…

A: The maintenance of the integrity of information in DNA molecule is most important for the survival…

Q: Chromatin remodeling by the SWI /SNF complex requires hydrolysis of ATP. What purpose does this…

A: ATP-dependent chromatin remodeling complexes i.e. SWI /SNF complex are specific machinery that can…

Q: Mice that are engineered to block expression of the gene coding for telomerase protein age at a much…

A: Telomeres are repetitive DNA sequences located at the extremes of chromosomes and it is a protective…

Q: The occurrence of multiple transposons within the genome oforganisms has been suggested as a…

A: Chromosomes are filamentous bodies present in the nucleus. They have the ability to self replicate…

Q: Which structure in the eukaryotic chromosome is about 2 nm in diameter, contains no histone proteins…

A: Transcription is the cycle by which the data in a strand of DNA is duplicated into another molecule…

Q: eukaryotes? To protect the DNA from restriction endonucleases To prevent nucleosome formation on…

A: DNA methylation is a biological process by which methyl groups are added to the DNA molecule. By…

Mitochondrial Mutations

A mitochondrion is a cellular organelle that serves as the site for cellular respiration and energy production (ATP or Adenosine Triphosphate). It is a double-membrane-bound organelle and is only present in eukaryotic cells.