Questions

Polygenic inheritance involves the determination of a particular phenotypic characteristic by many genes, called polygenes(group of genes influencing a quantitative characteristic), each having a small effect individually.

Height and skin colour in humans are examples of Polygenic characters.

Internal Rate of Return is that rate of Return at which the net present value is equal to Zero or it is the Rate which equates the present value of the cash inflows to the cash outflows.

NPV = Cash Inflow - Cash outflow

NPV = Zero

Havana is the capital city of Cuba.

It's currency is Cuban Peso.

A pure solid and a pure liquid are definitely a single phase because they are so united, or homogeneous. This leads to a homogeneous mixture also being a single phase.

Hence, the option that cannot be considered a single phase is A. a heterogeneous mixture.

Goosebumps are caused by the contraction of the tiny muscles attached to hair follicles. These muscles are arrectores pilorum muscles.

The prime cost calculates the use of raw materials and direct labor, but does not factor in indirect expenses, such as advertising and administrative costs.

Supervisor's wages doesn;t come under prime cost.