Answer:
In eukaryotic cells you find core and proximal promoters.
Promotors are specific DNA sequences where transcription factors (proteins) and RNA polymerase binds to initiate transcription. Promotors are located upstream the coding sequence
Core promoters are where RNA polymersae binds and proximal promoters are where transcription factors bind.
Enhancer elements are DNA sequences where transcription factors (proteins) bind to increase the rate of expresion of an specific gene. Enhancers can be located either upstream, downstream or thousands of nucleotids away from the of the coding region.
Explanation:
Promoters and enhancer are key elements for controling gene regulation. Transcription begins when chromatin rearranges from a condensed state to a accesible state, this allow to transcrition factors and RNA polymerase to bind specif DNA sequences (promotors). Proteins bind to enhancers , this complex develops a DNA loop, so that the protein that is bound to the enhancer interacts with the RNA polymersase. When this interaction is made, the activity of the RNA polymerase is increased.
I think the answer is recognition proteins!
A:similar animal fossils found in South America and Africa
Solar Distance:
The solar distance is the distance<span> between the Earth and the Sun. Since the Earth rotates, the distance changes.
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Air Pressure:
The air pressure/atmospheric pressure is <span>the pressure spent by the weight of the atmosphere.
</span>Latitudinal Location:
the latitudinal location is used, with longitude, to specify the exact location<span> of features on the Earth surface.
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Water presence:
The water presence is the existence of water.
There are many factors that influence the weather but the 4 main ones are solar distance, air pressure, latitudinal location, and water presence.
I hope this helps!
Answer:
In multicellular organisms, the mechanism most directly responsible for directing development and maintaining homeostasis is gene "regulation"
Explanation:
Even though the organs present throughout the body helps in maintaining the homeostasis, But the systems like endocrine system and nervous system plays important role in sustaining and regulating it. The gene regulation is the increase and decrease of the specific gene products. Gene regulation can also be understood as the regulating process which helps in controlling ability of the cell to the environmental changes or can say the adaptability of the cell to changing environment done by gene regulation.
