All organisms have dna, which differs only in the number and order of each type of nucleotide. this suggests that all organisms have

A common ancestor or a common reproductive cycle

Answer;

Common ancestry

All organisms have DNA, which differs only in the number and order of each type of nucleotide. This suggests that all organisms have a common ancestry.

Explanation;DNA molecules are fundamental molecules in organisms since they carry genetic information in living organisms. DNA sequences similarity among various organisms may be used to establish evolutionary relationship among living organisms.Many organisms have distinct DNA sequences, however, animals may share some specific types of genes which are similar genetically in the sequences of DNA. Organisms or animals whose DNA sequences are similar share common evolutionary origin.

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