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.
Polygenic inheritance is when a single trait is controlled by 2 or more sets of alleles.A polygenic trait is one whose phenotype is influenced by more than one gene. 8 people found this useful. group of genes, that determines a number of characeristics of an organism= its phenotype. (phenotype= appearance i.e blue eyes, blond hair). so it says, its genes (more than one), that decides how u are going to look like. foe example: blue eyes, red hair, big, small, etc...