What makes mitochondrial DNA useful as a molecular clock? - It is only found in select organisms, making it easier to compare relationships between species that have it.

- A large portion of the DNA ring is not vital to structure or function, allowing it to accumulate neutral mutations.

- Its rate of mutation increases over time as organisms continue to evolve and differentiate from each other.

- A slow mutation rate makes it useful for determining evolutionary relationships between ancient species.

Which skill, if it cannot be performed by a 3-year-old child, should alert the nurse that the child may be developmentally delayed?

Which is the correct first step in finding the area of the base of a cylinder with a volume of 26x cubic meters and a height of 6.5 meters? v=bh 6.5=b(26x) v=bh v=26pi+(6.5) v=bh v=26pi(6.5) v=bh 26pi=b(6.5)

Which statement best describes a typical difference that could be found between the "analysis" and "conclusion" sections of a lab report? a) only the "conclusion" describes errors that occurred during the experiment, and only the "analysis" section suggests further research. b) only the "analysis" section includes specific data comparisons, and only the "conclusion" section suggests further research. c) only the "analysis" section discusses whether the original hypothesis was supported, and both sections include graphs of data. d) only the "conclusion section discusses whether the original hypothesis was supported, and both sections suggest further research.(the answer is b i just took the test)