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SCORPION-xisa [38]
3 years ago
13

In which layer does the tempature of the earth has the least amount of heat?

Biology
1 answer:
77julia77 [94]3 years ago
8 0
Troposphere because it is at the very top. As u delve deeper, you get to the core which is the hottest part of the earth
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HELP!! DNA was isolated from water samples taken from six different sites. This gel
VladimirAG [237]

After running DNA in a gel, bands of different sizes and species might appear. <em>Scientists know silver carp are at North Shore site 1 because one of the bands in lane 1 matches a band in the positive control (Option C). </em>

<h2>Gel</h2>

When DNA was isolated and run in a gel, many bands migrated to different points.

These bands were the different-sized fragments of DNA samples from different species from the six sites.

<em>Researchers wanted to figure out where the silver carp is. </em>

To do it, they needed to identify the bands on the gel that belonged  to the silver carp DNA, so they included negative and positive controls to make comparisons.

<h3>Positive and negative Controls</h3>

Negative and positive controls guarantee the interpretations of the results.

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<em>Any</em><em> band</em><em> in the sampling sites that</em><em> matches</em><em> one of the </em><em>positive control</em><em> bands indicates that the species is present at that site.</em>

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As we can see, there are four sites where the bands match one of the bands of the positive control. These are,

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You can learn more about gel electrophoresis at

brainly.com/question/9437877

brainly.com/question/895793

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