Search results
Results from the WOW.Com Content Network
Some housekeeping genes are transcribed at a relatively constant rate and these genes can be used as a reference point in experiments to measure the expression rates of other genes. A facultative gene is a gene only transcribed when needed as opposed to a constitutive gene.
If the genes of a gene family encode proteins, the term protein family is often used in an analogous manner to gene family. The expansion or contraction of gene families along a specific lineage can be due to chance, or can be the result of natural selection. [2] To distinguish between these two cases is often difficult in practice.
Synteny is a neologism meaning "on the same ribbon"; Greek: σύν, syn "along with" + ταινία, tainiā "band". This can be interpreted classically as "on the same chromosome", or in the modern sense of having the same order of genes on two (homologous) strings of DNA (or chromosomes).
Gene functions in the minimal genome of the synthetic organism, Syn 3 [128] Essential genes are the set of genes thought to be critical for an organism's survival. [129] This definition assumes the abundant availability of all relevant nutrients and the absence of environmental stress. Only a small portion of an organism's genes are essential.
The human genome contains on the order of 20,000 genes which work in concert to produce roughly 1,000,000 distinct proteins. This is due to alternative splicing, and also because cells make important changes to proteins through posttranslational modification after they first construct them, so a given gene serves as the basis for many possible versions of a particular protein.
Structure of a gene regulatory network Control process of a gene regulatory network. A gene (or genetic) regulatory network (GRN) is a collection of molecular regulators that interact with each other and with other substances in the cell to govern the gene expression levels of mRNA and proteins which, in turn, determine the function of the cell.
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Among other things, it identifies the locations of genes and all the coding regions in a genome and determines what those genes do. [ 4 ] Annotation is performed after a genome is sequenced and assembled , and is a necessary step in genome analysis before the sequence is deposited in a database and described in a published article.