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 cells use this process to replicate themselves into daughter cells. In meiosis, diploid cells divide to produce haploid germ cells. The resulting haploid cells merge with other haploid cells during fertilization. Somatic cells, such as blood, skin and muscle cells are some examples of a diploid cell.