The parthenogenetic whiptail lizards have maintained their population levels primarily because they live in an extremely stable environment, a situation that minimizes the value of genetic diversity within a population.

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The statement is true. Since parthenogenetic whiptail lizards reproduce asexually, their genetic diversity is limited, but they have been able to maintain their populations because they live in an environment that is relatively stable and not subject to drastic changes. In contrast, in more variable or unpredictable environments, genetic diversity may be more important for the survival and adaptation of a population.

The Parthenogenetic Whiptail Lizards Have Maintained Their Population Levels Primarily