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Readme [11.4K]
3 years ago
9

This recolonization of an area that has been totally destroyed (as in the above example), is an example of

Biology
1 answer:
Nikitich [7]3 years ago
5 0

Answer:

After several years, organisms, such as lichens and moss begin to recolonize the area. This recolonization of an area that has been totally destroyed (as in the above example), is an example of. A) climax succession.

Explanation:

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3 years ago
What are the common promoter elements found in eukaryotic genes, and how are they different from enhancer elements?
V125BC [204]

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.

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3 years ago
Describe three possible effects of genetic drift on populations and/or specific alleles.
vfiekz [6]

Answer:

Genetic drift can result in the loss of rare alleles, and can decrease the size of the gene pool. Genetic drift can also cause a new population to be genetically distinct from its original population, which has led to the hypothesis that genetic drift plays a role in the evolution of new species.

Explanation:

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3 years ago
Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction
Rasek [7]
Astronomers have seen stars forming within a nebular cloud. As the nebular cloud condenses and its own gravitational attraction collapses it, heat and energy build up creating a planet.
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3 years ago
Read 2 more answers
In the traditional phylogeny (A), the phylum Platyhelminthes is depicted as a sister taxon to the rest of the protostome phyla,
Vadim26 [7]

Answer:

In the traditional phylogeny platyhelminthes is depicted as a lophotrochozoan phylum. What probably led to this change?

The removal of the acoel flatworms (Acoela) from the Platyhelminthes allowed the remaining flatworms to be clearly tied to the Lophotrochozoa.

Explanation:

8 0
4 years ago
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