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.
RE: Voltage drop on car battery. Sorry to be so late. The $10 meters that I've bought recently all come with a 10A scale, so there should be no problem with measuring large static currents from a car battery. If the battery is draining down in a week, the current draw would be on the order of 1 to 2 amps.