The common house fly has nucleotides that are 28% cytosine. what percentage of thymine would be present.

Answer;

Thymine= 22%

Explanation;For a double stranded DNA, A = T and G = C, That is the base Adenine pairs with the base Thymine, while the base Guanine pairs with the base Cytosine.All the four bases in a DNA strand together must equal 100 percent of the sample.Therefore; if you know the DNA sample is 20 percent thymine, you automatically know it is 20 percent adenine, as well, since they pair together.Additionally, Since all four bases together must equal 100 percent of the sample. Then if, cytosine is 28%, then Guanine is 28%;

Thus, since G + C + T + A = 100 , and G = C and A = T

T + A = 100 -(C+G)

        = 100 - 56

        = 44 %

Therefore; Thymine = 44/2 = 22%

The atomic number of oxygen is 8

The atomic number of zinc is 30

The atomic number of Lithium is 3

The atomic mass of oxygen is 15.999, for zinc it is 65.39, and Lithium is 6.941

The number of protons for oxygen is 8, for zinc it is 30, and for Lithium is 3.

The number of neutrons for oxygen is 8, for zinc it is 35, and for lithium is 4. To find the number of neutrons you have to do atomic mass - atomic number.I rounded the answers to find the #of neutrons.

The number of electrons is always the same as the number or protons so the answer is for oxygen 8, zinc 30, and lithium 3.

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