Final answer:
Having 66 to 69 percent of our DNA being repetitive is significant for the diversity and evolution of species.
Step-by-step explanation:
The significance of having 66 to 69 percent of our DNA being repetitive is related to the diversity and evolution of species.
Repetitive DNA sequences, such as transposons and satellite DNA, may not have a known genetic purpose, but they can have specific functions, such as regulating gene expression and increasing genetic diversity.
Having a large fraction of repetitive DNA provides a source of diversity for natural selection and allows for long-term survival of species.