One of the oldest myths in human genetics is that having blue eyes is determined by a single gene, with the allele for blue eyes recessive to the allele for non-blue eyes (green, brown, or hazel). Many people who know nothing else about genetics think that two blue-eyed parents cannot have a brown-eyed child.ne of the oldest myths in human genetics is that having blue eyes is determined by a single gene, with the allele for blue eyes recessive to the allele for non-blue eyes (green, brown, or hazel). Many people who know nothing else about genetics think that two blue-eyed parents cannot have a brown-eyed child.
Ohm's Law can be used to verify voltage drop. In a DC circuit, voltage equals current multiplied by resistance. V = I R {\displaystyle V=IR} . Also, Kirchhoff's circuit laws state that in any DC circuit, the sum of the voltage drops across each component of the circuit is equal to the supply voltage.
Voltage has a meaning of a gain while voltage drop - of a loss; voltage is an earned voltage while voltage drop is a lost voltage. If we consider the voltage across an element, voltage means its own voltage (created by the element) while voltage drop means some else's voltage (created by an external source). So, in the first case, the element is active (a source) while in the second case, the element is passive (resistor, capacitor, inductor or something else).