Basically, a gene is used to build a protein in a two-step process: 1  Step 1: transcription! Here, the DNA sequence of a gene is rewritten in the form of RNA. 2  Step 2: translation! In this stage, the mRNA is decoded to build a protein (or a chunk/subunit of a protein) that contains a specific series of amino acids.
In linguistics, a marker is a free or bound morpheme that indicates the grammatical function of the marked word, phrase, or sentence.More characteristically, markers occur as clitics or inflectional affixes. In analytic languages and agglutinative languages, markers are generally easily distinguished.In fusional languages and polysynthetic languages, this is often not the case.or example, in Latin, a highly fusional language, the word amo (I love) is marked by suffix-o for indicative mood, active voice, first person, singular, present tense. Analytic languages tend to have a relatively limited number of markers. Markers should be distinguished from the linguistic concept of markedness.
Markers can be an expressed region of DNA (gene encoding a protein) or a segment of DNA with no known coding function but whose pattern of inheritance can be determined. A marker can be localised to a specific region of the genome (e.g., all markers on the human transcript map are STSs). Markers have also been defined as a genetic trait, of which one allelic form is selected or screened for after recombination. Suicidology A potential physiologic indicator or predictor of an increased risk of suicide, the most promising of which is a decrease in serotonin in the brain. marker