The genetic instructions are found in within the dna, which is contained in inside the nucleus of the cells.
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The genetic instructions are found in the nitrogen bases within the DNA, which is contained in nucleotide inside the nucleus of the cells.

Explanation:

Inside nucleotide there are nitrogen bases along with phosphate group and sugar group. The four nitrogen bases are adenine, thymine, guanine and cytosine (ATGC).

These four bases pair up with each other inside the nucleotide. The order in which these bases are placed determines the genetic codes. This passes the instructions and characteristics from the parents to offspring.

nitrogenous bases

nucleotide

Explanation:

Hope this will help

answer; polycythemia is the correct answer;

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