introns: A)are parts of the new strand replaced with DNA nucleotides during replication B)Are joined together with other introns to make the mature mRNA C)are found in prokaryotic cells D)are binding sites for repressors; therefore introns are involved in controlling gene expression E)do not contain codons or information about proteins; they are removed from the mRNA during splicing/editing of mRNA

Q: Most structural genes of bacteria are grouped together and transcribed from a single affect…

A: DNA and RNA are are nucleic acids present in the organisms. DNA is the deoxy ribose nucleic acid…

Q: The process shown here is a) Replication b) Splicing c) Translation d) Transcription

A: The Central Dogma theory states that "DNA makes DNA through Replication, DNA makes RNA through…

Q: The lac operon is an example of ________ control in which the presence of an ________ is required…

A: lac operon is present in E.coli and it produce the enzymes which are required for the lactose…

Q: Transformation: A) O is the process by which a bacterium converts genetic information into a protein…

A: Prokaryotes are the single celled organisms (unicellular) and are the simplest form, which do not…

Q: Which of the following point mutations is likely to be the worst for an organism if they happened in…

A: Mutation is a change in genetic sequence or genomic sequence of an organism. This change can be…

Q: Transcription is the first step in gene expression. It involves copying a gene's DNA sequence to…

A: Rho factor works by binding to the transcript and halts transcription by actually breaking hydrogen…

Q: Reverse transcriptase does not catalyzea) RNA-dependent DNA synthesisb) RNA degradationc)…

A: Transcriptase is the enzyme which helps in transcription. Transcription is the process to synthesise…

Q: a piece of DNA is produced with  1) an enhancer from a gene expressed in the liver, 2) a promoter…

A: Given: A piece of DNA is produced with 1) an enhancer from a gene expressed in the liver, 2) a…

Q: Match each one (they can be repeated): 1) Plasminogen- Plasmin 2) Pro-insulin- Insulin 3) CFTR…

A: Transcription and translation are two crucial mechanisms of all living cells. The enzyme  RNA…

Q: Which of the following is true about the HesC gene? Choose all possible answe a) repressed by the…

A: Hematopoietic Stem Cells (HSCs) are the main cells inside the hematopoietic system that have the…

Q: An anticodon is 5' CGA 3'. The codon that pairs with the anticodon will be a) 3'UGC5' b) 5'GCT3' c)…

A: Transcription: "It is the process through which the enzyme RNA Polymerase transfers information from…

Q: TBP stands for?a) TATA box polymeraseb) TATA-box binding proteinc) Transcription associated factord)…

A: TBP is a type of a protein that helps in the process of transcription. Transcription is the process…

Q: Select an answer and submit. For keyboard navigation, use the up/down arrow keys to select an…

A: Transcription factors are the class of nuclear proteins that facilitate transcription. It is studied…

Q: Centers of transcriptional repression that are usually associated with lamina or found around…

A: Barr bodies are transcriptionally repressed centers meaning that most genes on the inactivated X…

Q: Which of the following best describes the central dogma of molecular biology? A) mRNA is…

A: In molecular biology, a central dogma is an illustration showing the flow of genetic information…

Q: A TATA box (core promoter) is ____________. Group of answer choices a) None of the above b)…

A: ANSWER;- a) None of the above Explain;- A TATA box is a sequence of DNA found in the core promoter…

Q: A mutation occurs that changes a codon from UCC to UCA. It turns out that this codon is for an amino…

A: Based on the nature of change that occurs in a codon due to a point mutation (mutation at a single…

Q: What is an open-reading frame? a) An unknown gene b) The protein-encoding sequence of a gene c) A…

A: ORFs are commonly found within genes, which are segments of DNA that contain the instructions for…

Q: RNA polymerase reads a template strand in the [blank] direction, and it synthesizes an RNA in the…

A: In most of the prokaryotes,single RNA polymerase causes transcription of all types of RNA. RNA…

Q: Which of the following is true for the ribosomes (rRNA) found in Prokaryotic cells? They are a)…

A: Ribosomal RNA(r-RNA) This RNA is 80% of the cell's total RNA. Found in ribosomes and is produced in…

Q: ATM is a kinase that phosphorylates histone H2AX in response to double-stranded DNA breaks. Which of…

A: ATM (Ataxia Telangiectasia Mutated) is a protein kinase that plays a critical role in the cellular…

Q: The lactose operon is likely to be transcribed when _____. A) there is more glucose in the cell than…

A: The initiation of transcription determines the regulation of prokaryotic genes. The regulation of…

Q: Which of the following most accurately describes the process involved in protein synthesis?…

A: Introduction  The decoding of an mRNA message into a polypeptide product is known as translation in…

Q: 1. The genetic code is redundant (degenerate) what is meant by this statement?   a) the genetic code…

A: Genetic code is the code table made in 1960s by Nirenberg and Khurana et al. They established that…

Q: cAMP binds to cAMP Receptor Protein (CRP), allowing CRP to bind to the promoter of the lac operon

A: Almost all bacteria such as E. coli contains lac operon which operates in utilization of lactose as…

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: Rho independent terminators Select an answer and submit. For keyboard navigation, use the up/down…

A: Transcription is the process in which the RNA is formed out of the DNA. The process of transcription…

Q: Which of the following is a possible consequence of a mutation that introduces a premature stop…

A: The stop codons are the specific genetic codon that do not codes any amino acids during the…

Q: Which of the following best describes the central dogma of molecular biology? O A) MRNA is…

A: Introduction In molecular biology, a central dogma is an illustration showing the flow of genetic…

Q: The mechanism by which lactose controls the lac of A) O Catabolite repression B) O DNA polymerase C)…

A: Operons are studied to understand the regulation of gene expression. It is studied under the domain…

Q: ranscription in eukaryotes; Oa) Occurs simultaneously with translation b) Does not require the RNA…

A: Transcription is the process of copying a segment of DNA into RNA.

Q: Shine-Delgarno sequence polyribosome formation operator Two of the above are correct

A: Shine Dalgarno sequence present at the 5 ends of the mRNA preceding the start codon of mRNA. It…

Q: Which of the following is true of phase variation? A) O It is triggered by stalled ribosomes. B) O…

A: Phase variation is a feature seen in Salmonella, in which it can withstand unfavorable environmental…

Q: Which, if any, of the following statements is false? a) Most of the inherited changes in our DNA…

A: The mutation alters allele frequencies by constantly introducing new alleles, which can be…

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.