I would say carbon dioxide
Answer:
and a single circular DNA molecule.
Http://www.ema.co.tt/docs/events/iyb/types%20of%20biodiversity.pdf
The principle of independent assortment states that during gamete formation genes for different traits separate without influencing each other’s inheritance. This law was proposed by Gregor Mendel. According him when two or more characteristics are inherited, individual hereditary factors assort independently during gamete production, giving different traits an equal opportunity of occurring together.