Probably eating a lot of fruit. If there's abundant vitamin C in the diet, it doesn't really matter if you can make it yourself or not, so there's no evolutionary advantage to keeping around the cellular machinery to do so.
Because the gene that synthesizes vitamin C is full of deleterious mutations in humans and is inactivated. This is posited to be caused by our primate ancestors being basically fruitovores and not needing to synthesize vitamin C, so this gene could have started picking up mutations that were not visible to natural selection and so were not selected out.
The steps leading to gene synthesis typically involve designing the sequence, selecting a gene synthesis provider, submitting the sequence for synthesis, reviewing and confirming the synthesized gene, and receiving the synthesized gene for downstream applications.
The expression of a Gene causes the synthesis of Its associated protein.
synthesized from coded information of gene
Protein S is a vitamin K-dependent plasma glycoprotein synthesized in the endothelium. In the circulation, Protein S exists in two forms: a free form and a complex form bound to complement protein C4b. In humans, protein S is encoded by the PROS1 gene.
Individuals with the MTHFR gene mutation may have difficulty processing vitamin B12, which is essential for various bodily functions, including nerve function and DNA production. This can lead to a deficiency in vitamin B12, causing symptoms such as fatigue, weakness, and neurological issues. It is important for individuals with the MTHFR gene mutation to monitor their vitamin B12 levels and potentially supplement with it to prevent deficiencies and maintain overall health.
These genes have lost there protein coding abilities and are riddled with deleterious mutations. Two points to the evolutionary theory contribution. By example. Firstly, all great apes have a vitamin C pseudogene that links humans to all other great apes showing common ancestry. Secondly, this gene is inactive in fruitavores ( humans are common ancestors to fruitavores ) as they eat all the vitamin C they need so this gene became invisible to natural selection and deleterious mutation accumulating in the gene were not selected against as the survival and reproductive success of these organisms was no longer affected by not synthesizing vitamin C.
Transgenic Organism
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A cognate protein is a protein that is produced by a gene with a matching sequence. In the process of protein synthesis, the gene serves as a template for the production of the cognate protein through transcription and translation. The gene provides the instructions for the sequence of amino acids that make up the protein, which is then synthesized by the cell.
The section of DNA that is transcribed is called a gene. Genes contain the instructions for making specific proteins or functional RNA molecules. During transcription, an RNA molecule is synthesized from the gene for further processing and translation.
It is cytoplasm where they are synthesized. Gene expression happens in the DNA at nucleus, that transcribe mRNA. Exported RNA then used as a template to be translated to protein by ribosomes in cytoplasm.