Gene | Definition, Structure, Expression, & Facts | Britannica
网页2024年9月8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
网页A gene is a DNA sequence that codes for a diffusible product. This product may be protein (as is the case in the majority of genes) or may be RNA (as is the case of genes that code for tRNA and rRNA). The crucial feature is that the product diffuses away from its site of synthesis to act elsewhere.
What is a gene? - MedlinePlus
网页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. However, many genes do not code for proteins, instead they help control other genes.
Gene - Definition and Examples - Biology Dictionary
网页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.
What Are Genes, DNA, and Chromosomes? - Verywell Health
网页2024年8月22日 · Genes are the basic units that determine the traits that we inherit from our parents. They contain coded information found in nearly every cell of the human body. Our genes are made up of DNA, a molecule with this coded information. Hundreds to thousands of genes are found on each chromosome inside our cells.
Home - Gene - NCBI - National Center for Biotechnology Information
网页Gene integrates information from a wide range of species. A record may include nomenclature, Reference Sequences (RefSeqs), maps, pathways, variations, phenotypes, and links to genome-, phenotype-, and locus-specific resources worldwide.
Explainer: What are genes? - Science News Explores
网页2019年2月8日 · Genes are the blueprints for building the chemical machinery that keeps cells alive. That’s true for humans and all other forms of life. But did you know that with 20,000 genes, people have almost 11,000 fewer genes than water fleas? If the number of genes doesn’t predict complexity, what does?
Gene
网页4 天之前 · Definition. 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.
Genes: Function, makeup, Human Genome Project, and research
网页2024年1月11日 · A gene is a basic unit of inheritance passed on from male and female parents to their children. Genes contain DNA, which is made up of sequences that determine the physical and biological...
Genes - National Geographic Society
网页2023年10月19日 · A gene is a section of a long molecule called deoxyribonucleic acid (DNA), or—in some viruses—a similar molecule called ribonucleic acid (RNA). DNA and RNA are made of building blocks called nucleotides. Each nucleotide is built around one of the four different subunits, called bases.
跳至内容