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.
A diploid has two sets of different DNA.. for example almost all human cells are diploid. There are 46 chromosomes in the human diploid cell. A haploid cell has half of the genetic information of diploid cells. A human haploid cell has 23 chromosomes. These cells are the sperm and the egg. Coming together, each of their 23 chromosomes combine to make a baby with 46 chromosomes.