Respuesta :

Answer:

Percent of Guanine = 42%

Explanation:

Given:

Percent of Thymine = 28%.

Find:

Percent of Guanine

Computation:

DNA contain 20% Thymine will have 30% Guanine

So,

Percent of Guanine = Percent of Thymine [30/20]

Percent of Guanine = 28 [30/20]

Percent of Guanine = 42%

luisvaschetto

If DNA contains 28% Thymine, then approximately 22% of the nucleotides in this sample will be Guanine.

  • DNA is a double helix molecule composed of two chains of nucleotides linked together by hydrogen bonds.

  • In DNA, there are four classes of nucleotides that contain different nitrogenous bases: Thymine, Guanine, Adenine, Thymine.

  • According to the base pair rules, Adenine pairs with Thymine and Guanine pairs with Cytosine.

  • Thus, the percentage of Thymine must be equal to Adenine (28%), while the remaining percentage is equal to the sum of Guanine + Cytosine (28 + 28 = 56 >> 100 -56 = 44).

  • In consequence, the percentage of Guanine, in this case, is equal to 22% (22 G + 22 C = 44).

In conclusion, if DNA contains 28% Thymine, then approximately 22% of the nucleotides in this sample will be Guanine.

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