The indoor cabinet also typically includes a furnace (or the inside part of a heat pump). The indoor and outdoor units are connected by a refrigerant line. Greater energy efficiency possibilities - Split air conditioning systems have SEER ratings from 13 to 23.
A single gene trait is controlled by a single gene. Polygenic traits are controlled by two or more than two genes on different chromosomes. These genes are described as polygenes. Examples of human polygenic inheritance are height, skin color and weight.
Confidence votes 2.0K. A polygenic trait is a trait in which multiple sets of alleles are used to determine the trait, whereas in a single gene trait aka. a Mendelian trait, only one pair of alleles is used.