As activators that increase transcription initiation or decrease action of transcription initiation of related gene, transcription factors that bind to enhancers have an impact on genes thousands of base pairs distant.
Because the DNA between the enhancer and the promoter loops out, transcription factors bound to the enhancer can communicate with the basic transcription machinery directly. A few proteins that act as transcription regulators bind to enhancers, that are regulatory components located outside the gene they are meant to activate. DNA sequences known as insulators prevent enhancers from working. Insulators may work by creating chromatin loops that connect interconnected areas of genes and regulatory components.
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Crater lake was produced when a stratovolcano collapsed, creating the crater.
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<em><u>A</u></em><em><u> hormone that tells cells in your liver and muscles to convert glycogen into glucose and release it into your blood so your cells can use it for energy</u></em><em><u>.</u></em>
Metaphase is characterized by the alignment of chromosomes on the equator of the cell. Metaphase is the third phase of mitosis , a type of cell division that takes place in the somatic cells where a parent cell divides into two identical diploid daughter cells. During this phases the cell's chromosomes align themselves at the middle of the cell, called the equator. The chromosomes, which have been replicated and remain joined at a central point called the centromere, are called sister chromatids.
Cranial nerves arise from the brain and brain stem while the spinal nerves arise from the spinal cord. There are 12 pairs of cranial nerves that pass through the foramine found in the skull and named as CN I to CN XII. 20 bundles of nerve fibers pass through the hole of olfactory foramina and makes the olfactory nerves or Cranial Nerve I (CN I).