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Setler79 [48]
3 years ago
10

In 1985, research by ______________ and his colleagues at leicester university, england led to the discovery that portions of th

e dna structure of certain genes are as unique to individuals, as are fingerprints.
Biology
1 answer:
Irina18 [472]3 years ago
6 0
The answer is Dr Alec Jeffreys. <span>The genetic fingerprint and DNA profile are used by forensic science to help the police in their research work. The same technique has proved very useful in resolving litigation about paternity, for the identification of human remains in armed conflicts and for the identification of the corpses of historical figures.</span>
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The constant turnover of body tissues requires the ______ supplied by carbohydrates, proteins, and lipids
Lera25 [3.4K]

The constant turnover of body tissues requires the <u>chemical energy </u>supplied by carbohydrates, proteins, and lipids.

<h3> What is Chemical energy?</h3>
  • The bonds of chemical molecules contain energy.
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  • Some of the heat energy needed for a reaction to continue can be stored as chemical energy in newly created bonds.
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2 years ago
What was the impact of the use of fossil fuels during the industrial revolution?
IrinaK [193]

Impact of the use of fossil fuels during the industrial revolution was it made possible a huge increase in the amount of productive energy available to humans.

The development of machines, including steam engines and the internal combustion engine, made it possible to exploit vast new resources of energy stored in fossil fuels, specifically coal and oil. The fossil fuels revolution greatly increased the energy available to human societies during industrial revolution.

Contrary to this fossil fuel have some disadvantages like when fossil fuels are burned, they release large amounts of carbon dioxide, a greenhouse gas, into the air. Greenhouse gases trap heat in our atmosphere, causing global warming.  

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8 0
1 year ago
Consumers at each trophic level convert only 10% of the energy in their food to energy for themselves. What happens to the other
Sergio039 [100]

Answer:

There are two answer for this one. They are 1.) it is lost as heat. and 2.) it is used in life processes.

Explanation:

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7 0
4 years ago
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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
Which hypothesis proposes the correct explanation for the variety of traits in a species?
Ray Of Light [21]

Answer:

A. Cloning creates variety because offspring receive genetic material that is different from that of their parent.

Explanation:

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