For a recessive allele to produce a recessive phenotype, the individual must have two copies, one from each parent. An individual with one dominant and one recessive allele for a gene will have the dominant phenotype.
So I relit the pilot light, then sat there while it heated the water. When the burner turned off, so did the pilot light. At that point, I could hold down the button and relight the pilot light, but when I released the button, the pilot... show more The flexible gas line to the water heater was replaced today. Did not help. So I relit the pilot light, then sat there while it heated the water. When the burner turned off, so did the pilot light. At that point, I could hold down the button and relight the pilot light, but when I released the button, the pilot...
How it Works. Gas water heater might use a pilot light with the thermocouple or electrodes (electronic ignition) to ignite the gas on the main burner and in the combustion chamber. Thermocouple or electrodes are used as safety elements to inform the gas valve that the pilot or main burner is lit.