Certification. If a sonographer has obtained education through a college or university, the sonographer must pass an exam in order to get their certification. Some states require that ultrasound technicians be licensed, which requires them to hold current certification.
diploid â(not comparable) (cytology) Of a cell, having a pair of each type of chromosome, one of the pair being derived from the ovum and the other from the spermatozoon. Most somatic cells of higher organisms are diploid.
diploid. 1. having two sets of chromosomes, as normally found in the somatic cells; in humans, the diploid number is 46. 2. an individual or cell having two full sets of homologous chromosomes.