What is the role of the lacZ gene product, the enzyme B-galactosidase?

Q: What are Suppressor mutations in tRNA genes?

A: Mutation is the sudden heritable changes that occur in the DNA sequences due to error while copying…

Q: What are the two enzymatic functions of reverse transcriptase?

A: Enzymes are the biocatalyst that catalyzes the biochemical reactions or processes by lowering the…

Q: What is the significance of the terminal inverted repeats oftransposons?

A: Transposons are the sequences of the nucleotides in the genome that have the ability to change their…

Q: From the result shown, what might be the histidine biosynthetic pathway (the order of enzymes)?

A: Histidine biosynthesis is an ancient metabolic partway present in bacteria, archaea, lower…

Q: What is the Results of tra splicing in the absence of Sxl protein?

A: sxl or sex lethal gene is found in Drosophila melanogaster. sxl gene in Drosophila regulates the sex…

Q: This question pertains to membrane transport and cell signaling.  What are kinases and phosphatases?…

A: Cell signaling pathway is an important biological process that involves as a series of reactions.…

Q: Are tRNAfmet and tRNAmet made from the same aminoacyl tRNA synthetase?

A: Amino acyl tRNA synthase pairs tRNA with amino acid that their anti codon codes for. Amino acyl tRNA…

Q: which enzyme recognizes the TATA box?

A: Transcription is the process in which the nucleotide sequences of a gene are transcribed into mRNA…

Q: Why does the activity of histone deacetylase tend to inhibit transcription?

A: Histone deacetylase is an enzyme which is involved in the removal of acetyl group from the lysines…

Q: What form of lac repressor mutation might be both constitutive and trans-dominant?

A: A lac repressor is a protein that which binds to DNA and suppresses the expression of genes encoding…

Q: What is the mechanism through which messenger RNA molecules transfer genetic information from DNA?

A: The Transcription is the process of creating mRNA from DNA.

Q: What are the two types of transposable elements?

A: Transposable elements are known as stretches of DNA molecules and they can move from one place to…

Q: Consider the following three diagrams of a nerve cell membrane. They show resting potential,…

A: Cells are in resting membrane potential due to the differential ion concentrations inside and…

Q: What general characteristics are found in many transposable elements?

A: Transposable elements are also known as jumping genes or transposons. A transposon is a segment of…

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.