Imagine that you've discovered a regulatory sequence thousands of base pairs away from the promoter and that when this sequence
is lost due to mutation, levels of gene expression decrease sharply. This sequence is most likely ______. A. A silencerB. An enhancerC. A promoter-proximal elementD. A promoter
Enhancers are the regulatory sequences and are generally located 80-160 base pairs upstream of the transcription start site. Enhancers have bidirectional elements that are involved in the initiation of transcription. Enhancers serve as the binding sites for activators to increase the concentration of activators in the vicinity of the promoter and thereby increase the rate of transcription of the gene.
According to the given information, the loss of a regulatory sequence led to a reduced level of transcription of the gene. This means that the regulatory sequence was involved in the upregulation of transcription. The presence of the sequence far away from the promoter makes it an enhancer.
The best and worst possible outcome and the long-term effect on the cell if mRNA strands were miscopied is that the cell will not make functional proteins from that mRNA strand. The best and at the same time worst possible outcome is that the cell will not make functional proteins from the mRNA strand.<span> </span>
<span>https://www.nature.com/scitable/topicpage/inheritance-of-traits-by-offspring-follows-predictable-652... I think you can use this website to help you. :)</span>
Listen to pronunciation. (al-VEE-oh-ly) Tiny air sacs at the end of the bronchioles (tiny branches of air tubes in the lungs). The alveoli are where the lungs and the blood exchange oxygen and carbon dioxide during the process of breathing in and breathing out.
