Explain the roles of cell signaling in DNA, transcription.
The operator gene is where the transcription factor protein can bind whereas the promoter gene is where RNA polymerase binds to start transcription (3rd, 0:50) What constitutes the basic transcription apparatus and in which kind of cell is it found?
Common genetic variations in the gene encoding transcription factor 7-like 2 (TCF7L2) reveal the strongest association with type 2-diabetes known to date. These lead to impaired insulin production and output, but the mechanisms of disease remain incompletely known.
Question: This Lesson Discussed 4 Classes Of Transcription Factor Genes That Act Sequentially To Control Pattern Formation In Drosophila: Maternal Genes (nanos), Gap Genes (knirps), Pair Rule Genes (runt), And Segment Polarity Genes (gooseberry). Given What Was Discussed About The Role Of Each Of These Classes Of Genes, Predict The Effect Of The Scenarios Below.
Transcription factor, molecule that controls the activity of a gene by determining whether the gene’s DNA (deoxyribonucleic acid) is transcribed into RNA (ribonucleic acid). The enzyme RNA polymerase catalyzes the chemical reactions that synthesize RNA, using the gene’s DNA as a template. Transcription factors control when, where, and how efficiently RNA polymerases function.
In molecular biology, a transcription factor (TF) (or sequence-specific DNA-binding factor) is a protein that controls the rate of transcription of genetic information from DNA to messenger RNA, by binding to a specific DNA sequence. The function of TFs is to regulate—turn on and off—genes in order to make sure that they are expressed in the right cell at the right time and in the right.
In this study, we identified two regulatory components controlling leaf width and size: the AN3 and AtGRF5 genes that encode a putative transcription coactivator and a putative transcription factor, respectively. These two gene products are likely to act in the same developmental pathway, given that the leaf phenotypes caused by loss of function of these genes are similar to each other.
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