If stable isotope analysis is conducted on a human skeleton that during life consumed a diet rich in C4 plants such as maize and very little meat, then the isotopic ratios of the bones would show a high ratio of:
A) 12C to 13C.
B) 13C to 12C.
C) 15N to 14N.
D) 13C to 15N.

Question

Quizplus · Accepted Answer

C4 plants, like maize, have a distinct isotopic signature, leading to a higher ratio of 13C to 12C in the tissues of individuals who consume them. This is because C4 photosynthesis discriminates less against the heavier carbon isotope (13C) compared to C3 plants, resulting in a higher 13C/12C ratio in the consumer's tissues.

If Stable Isotope Analysis Is Conducted on a Human Skeleton