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.
In order for chromosomes to be seen this way, they need to be stained. Once stained, the chromosomes look like strings with light and dark bands, and their picture can be taken. A picture, or chromosome map, of all 46 chromosomes is called a karyotype. The karyotype can help identify abnormalities in the structure or the number of chromosomes. To help identify chromosomes, the pairs have been numbered from 1 to 22, with the 23rd pair labeled X and Y..