Open Coil (uncovered) humbucker pickup. Covered humbucker pickup on a Les Paul. A humbucking pickup, or humbucker, is a type of electric guitar pickup that uses two coils to buck the hum (or cancel out the interference) picked up by coil pickups.n 1996, Kinman Guitar Electrix introduced replacement pickups for Stratocaster and Telecaster guitars. These were of the stacked humbucker design, where the lower pickup coil functions solely to cancel hum.
What does a karyotype show? A: A karyotype shows the shape, relative sizes and general structures of an organism's chromosomes. This technique, which uses special dyes and microscopes to view the chromosomes, is very useful for detecting large mutations or other abnormalities in an organism's genes.
Most living things have chromosomes, or units of genetic information, in their cells. The number and appearance of chromosomes vary among species. A karyotype is the number, size, and shape of chromosomes in an organism. To determine the karyotype of an organism, scientists must follow these steps: 1  Collect a cell from an individual. 2  Induce the cell to divide. 3  Stop cell division in metaphase when chromosomes are easiest to see. 4  Stain the chromosomes to make them visible. 5  View the cell under a microscope.