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Search Results for: structural gene

Structural gene

Definition noun, plural: Structural genes Any of the genes coding for the production of a specific RNA, structural... Read More

Gene

A gene is the fundamental, physical, and functional unit of heredity. The genes make up the sequences of DNA (genotypes).... Read More

Gene Action – Operon Hypothesis

Reviewed by: Mary Anne Clark, Ph.D. Some genes are switched on or off depending on environmental conditions. The... Read More

Dominant

Dominant Definition The word dominant or dominant trait is commonly used in biology. The general meaning of dominant is to... Read More

Mutation

Mutation is a permanent, heritable change in the nucleotide sequence or the process by which such a change occurs in a gene... Read More

Glucose

Glucose occurs naturally and is ubiquitous. It is one of the three most common monosaccharides; the other two are fructose... Read More

Chromatin

Chromatin Definition What is chromatin in a cell? Chromatin is a complex of nucleic acids (e.g. DNA or RNA) and proteins... Read More

Biology

Biology Definition Biology is the branch of science that primarily deals with the structure, function, growth, evolution,... Read More

Nucleus

In cell biology, the nucleus is the large, membrane-bounded organelle that contains the genetic material in the form of... Read More

Genetic Information and Protein Synthesis

Genetic Code Genes are sequences of DNA nucleotides that carry and transmit the information specifying amino acid sequences... Read More

Euchromatin

Definition noun A slightly packed or partially condensed form of chromatin that contains structural genes and is usually... Read More

Operon Model

Definition noun A model conceptualized by François Jacob and Jacques Monod depicting the coordinate expression of a group... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define the epidermis as one or more layers of cells forming the tough... Read More

Organelle

An organelle refers to any of the various cellular structures that perform a distinctive function inside a cell. The cell is... Read More

Constitutive mutation

Definition noun A mutation usually in the operator gene or regulator gene resulting in unregulated expression of structural... Read More

Mutagen

Mutagen Definition What is a mutagen? A mutagen is a substance or agent that causes DNA impairment that results in the... Read More

Animal cell

An animal cell is the fundamental functional unit of life of animals. It is also the basic unit of reproduction. Animal... Read More

Protein

Protein Definition Proteins are biomolecules comprised of amino acid residues joined together by peptide bonds.... Read More

Operon

Definition noun, plural: operons A group of genes or a segment of DNA that functions as a single transcription unit. It is... Read More

Scleroprotein

Definition noun, plural: scleroproteins A type of protein characterized by being fibrous and its function which is to... Read More

Biomolecule

Definition noun plural: biomolecules bi·o·mol·e·cule, ˈbaɪoʊ ˈmɑləkjul Any of the molecules produced by living... Read More

Spheroprotein

Definition noun, plural: spheroproteins A type of protein characterized by being globular or spherical in shape, and... Read More

Arthropod

Arthropod Definition What is an arthropod? An arthropod is an invertebrate living organism characterized by the presence of... Read More

Erb

Erb (Science: oncogene) two oncogenes, erb a and erb B, associated with the avian erythroblastosis virus (an acute... Read More

Molecular genetics

Definition noun A branch of genetics that deal with the structure and function of genes at a molecular... Read More

Nuclear matrix

Definition noun plural: nuclear matrices (cell biology) A 3-dimensional filamentous protein network that extends... Read More

Organism

An organism refers to a living thing that has an organized structure, can react to stimuli, reproduce, grow, adapt, and... Read More

Genetic material

Genetic Material Definition What is genetic material? Genetic material is the hereditary substance in the cell. It carries... Read More

Nuclear lamina

Definition noun plural: nuclear laminae or nuclear laminas nu·cle·ar lam·i·na, ˈn(j)ukliɚ ˈlæm.ɪ.nə (cell... Read More

Degenerate

Degenerate means to become worse or less of its kind or former state. In biology, it means an entity performs the same... Read More

Human milk oligosaccharide

Definition noun plural: human milk oligosaccharides An oligosaccharide that occurs in high concentrations and exclusively... Read More

Membrane protein

Definition noun, plural: membrane proteins A type of protein that is attached to, or associated with, a biological... Read More

Gene rearrangement

Gene rearrangement a structural alteration of a chromosome that causes a change in the orderof its... Read More

Sarcolemma

Sarcolemma Definition What is the sarcolemma? It is the thin, transparent, extensible plasma membrane of the muscle cell.... Read More

Protein synthesis

Protein synthesis is the process of creating protein molecules. In biological systems, it involves amino acid synthesis,... Read More

Nucleoplasm

Definition noun plural: nucleoplasm nu·cle·o·plasm, ˈnjuːklɪəˌplæzəm (cell biology) The protoplasm of the... Read More

Homologous structures

Homologous Structures Definition What are homologous structures? Before we define that, let us first identify the meaning... Read More

Eubacteria

Eubacteria are prokaryotic microorganisms consisting of a single cell lacking a nucleus and containing DNA is a single... Read More

Thyroxine

Definition noun, plural: thyroxines An iodine-containing hormone (chemical formula: C15H11I4NO4) produced by the thyroid... Read More

Trehalose

Definition noun plural: trehaloses tre·ha·lose, loʊs A disaccharide made up of two α-glucose molecules, and serves as... Read More