The lac operon and trp operon are genetic regulatory systems in prokaryotes. The lac operon controls the expression of genes responsible for lactose metabolism, allowing bacteria to use lactose as a carbon source. The trp operon regulates genes involved in tryptophan synthesis, ensuring its production when tryptophan is scarce. This […]
Homology modelling, also known as comparative modelling, is a computational technique in structural biology. It predicts the 3D structure of a protein based on the known structure of a related protein (homolog). It relies on the assumption that structurally similar proteins share similar functions. This is an MCQ on Homology […]
Genetic markers are specific DNA sequences or variations that serve as identifiable points on a person’s or organism’s genome. They are used in genetic research, diagnostics, and ancestry tracing to identify genetic traits, mutations, or associations with diseases, providing valuable insights into an individual’s or population’s genetics. This is an […]
In eukaryotes, regulation of gene expression is a complex process that controls when and to what extent genes are transcribed and translated into proteins. This regulation involves various mechanisms, including transcription factors, chromatin remodelling, RNA processing, and post-translational modifications, ensuring precise control of cellular functions and responses to environmental cues. […]
A cell cycle checkpoint is a regulatory control point in the cell cycle where various signalling pathways assess the fidelity of DNA replication and repair, ensuring that cell division proceeds accurately, preventing the propagation of genetic errors or damaged DNA. This article on Checkpoints of Cell Cycle MCQ will help […]