What is homologous structure that is greatly reduced in size?
What are chromosomes that are of the same size and function and the centromere is at the same location yet are not homologous?
a linear power supply the noise or ripple can be reduced to mv. However it is bulky heavy and inefficient A switching power supply it is easier to filter its output but the hi frequency noise and spikes are not that ease to get rid off. The weight and size can be greatly reduced and the efficiency greatly improved