Biology
Grade-8
Easy

Question

___ are DNA sequences that are often located far from the genes they regulate in eukaryotes where transcription activators can bind.

  1. Histones
  2. Promotors
  3. Enhancers
  4. None

hintHint:

This region of the DNA sequence bind with the transcription factor to increase the activity of the promotor.

The correct answer is: Enhancers


    • Within this DNA sequence, proteins are known as transcription factor bind to the enhancer and increase the activity of the promoter.
    • In genetics, an enhancer is a short (50–1500 bp) region of DNA that can be bound by proteins (activators) to increase the likelihood that transcription of a particular gene will occur.
    • These proteins are usually referred to as transcription factors. Enhancers are cis-acting. They can be located up to 1 Mbp (1,000,000 bp) away from the gene, upstream or downstream from the start site. There are hundreds of thousands of enhancers in the human genome.
    • They are found in both prokaryotes and eukaryotes.

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