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Vadim26 [7]
3 years ago
6

HELP!!!

Biology
1 answer:
Phoenix [80]3 years ago
3 0

There's been a lot of bad news for polar bears recently. In 2007, for example, scientists reported that if global warming continues unabated, the population could drop two-thirds by 2050.

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Louis Pasteur contributed all of the following to Germ Theory EXCEPT
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A sample of DNA is collected from an organism. It is analyzed and determined that 20% of the DNA is made up of the base adenine.
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The correct answer is -

Thymine: 20%

Guanine: 30%

Cytosine: 30%

Explanation:

According to Chargaff's rule which states that the purine residues are equal to the pyrimidines residue in DNA sample which means A+G = T+C where A is adenine, G is guanine, C is cytosine and T is thymine. It is also known that A is always equal to T and C is equal to G.

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as we know G is equal to C similarly A is equal to T

Thus, G = C= 30%

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