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.
1. A haploid cell has only one set of chromosomes while diploid cell has two sets of chromosomes. 2. The somatic cells are diploid and the gametes are haploid in humans. 3. Diploid cells are developed as a result of mitotic cell division whereas haploid cells are developed as a result of meiotic cell division. 4.