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.
Method 2 of 3: Parallel Circuit. 1. If you know the resistance of each resistor, calculate their total resistance. Use the equation 1/Rt = 1/R1 + 1/R2 + ...+1/Rn) where R1 is your first resistor, R2 is your second resistor, and so on. find the lowest common denominator, calculate the sum and flip the answer. If you know total voltage and total current, you can use the equation Rt = Vt/It to calculate total resistance. 2  If you know the total power and the total voltage, you can use the equation Rt = Vt^2/Pt to calculate total resistance.