Limestone is not an example of an ore. It is a sedimentary rock. The answer is B.
Answer: option B) A gene can take different forms called alleles.
Explanation:
An allele is one of the two or more different forms of the same gene.
For example, a trait such as seed shape is represented expressed a gene, but with allele of "RR" (round seeds) and "rr"(wrinkled seeds) observed physically by the farmers.
Thus, the correct answer is that a gene can take different forms called alleles.
The outcome of this error would be that the gradient of the proton in the thykaloid space would not be able to be used to produce ATP. This is because the ATP synthase was inserted in a backward position to the membrane which would cause for protons to the build up in the thykaloid space.