Human blood consists of blood a, b,and o. however, there is one more blood group, ab, which contains alleles a and b in the same genotype. what is this phenomenon called? ?

This phenomenon is referred as Codominance. Codominance is termed as, the distinct expression of both alleles of a gene.

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a