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.
There are two types of cells in the body-haploid cells and diploid cells. The difference between haploid and diploid cells is related to the number of chromosomes that the cell contains.aploid cells are a result of the process of meiosis, a type of reductional cell division in which diploid cells divide to give rise to haploid germ cells or spores. During meiosis, a diploid germ cell divides to give rise to four haploid cells in two rounds of cell division.