Gene | Definition, Structure, Expression, & Facts | Britannica
2025年1月9日 · gene, unit of hereditary information that occupies a fixed position (locus) on a chromosome. Genes achieve their effects by directing the synthesis of proteins. In eukaryotes (such as animals, plants, and fungi), genes are contained within the cell nucleus.
Gene - Wikipedia
We define a gene as a DNA sequence that is transcribed. This definition includes genes that do not encode proteins (not all transcripts are messenger RNA). The definition normally excludes regions of the genome that control transcription but are not themselves transcribed.
What is a gene? - MedlinePlus
2024年5月21日 · A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins, which are needed for the body to function.
Gene
5 天之前 · The gene is considered the basic unit of inheritance. Genes are passed from parents to offspring and contain the information needed to specify physical and biological traits. Most genes code for specific proteins, or segments of proteins, which have differing functions within the body.
Gene - Definition and Examples - Biology Dictionary
2020年10月27日 · A gene features a sequenced chain of nucleic acids which are able to pass on pieces of genetic information through the process of replication, transcription, and translation and provide one or more proteins, the type of which is based upon that piece of …
Genes – Characteristics, Structure and Functions of Gene - BYJU'S
2022年8月18日 · Genes are functional units of heredity as they are made of DNA. The chromosome is made of DNA containing many genes. Every gene comprises of the particular set of instructions for a particular function or protein-coding.
Gene - Definition and Examples - Biology Online Dictionary
2023年9月8日 · A gene is defined as the fundamental, physical, and functional unit of heredity since a gene is comprised of nucleotides (on a specific site on a chromosome) that is responsible for the physical and heritable characteristics or phenotype of an organism.
Definition of gene - NCI Dictionary of Genetics Terms - NCI
Genes are short pieces of DNA that carry specific genetic information. The basic unit of heredity passed from parent to child. Genes are made up of sequences of DNA and are arranged, one after another, at specific locations on chromosomes in the nucleus of cells.
What Is A Gene Simple Definition? | Unlocking Biology
Definition of a Gene: A gene is a DNA segment encoding protein instructions. Gene Structure: Genes consist of promoter regions, exons, and introns. Protein Synthesis: Genes undergo transcription and translation to form proteins.
What is a gene? - YourGenome
Genes are small sections of DNA that code for a functional product, like a protein. Our DNA is organised into small sections, called genes. Each gene contains the instructions for making a specific product – usually a protein.