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 | Definition, Structure, Expression, & Facts | Britannica
2024年12月7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.
Gene
6 天之前 · 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. Humans have approximately 20,000 protein-coding genes.
Gene Definition & Meaning - Merriam-Webster
The meaning of GENE is a specific sequence of nucleotides in DNA or RNA that is located usually on a chromosome and that is the functional unit of inheritance controlling the transmission and expression of one or more traits by specifying the structure of a particular polypeptide and especially a protein or controlling the function of other ...
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.
Gene - Definition and Examples - Biology Dictionary
2020年10月27日 · A gene is an extremely specific sequence of nucleotide monomers that has the ability to completely or partially control the expression of one or more traits in every type of living organism. Genes are formed from deoxyribonucleic acid (DNA) and, in the case of some viruses, ribonucleic acid (RNA) polymers.
Gene Definition - Explore the Meaning of Genes - BYJU'S
Gene is presently defined as ‘the unit of inheritance composed of a segment of DNA situated at a specific locus that carries coded information and also has the ability to undergo mutation and crossing over.’
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.
GENE | English meaning - Cambridge Dictionary
GENE definition: 1. a part of the DNA in a cell that controls the physical development, behaviour, etc. of an…. Learn more.