Which one of these factors will NOT contribute to the climate of a particular region?

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.

a symbiotic relationship with the mitochondria