Whether eye dilation during an exam is necessary depends on the reason for your exam, your age, your overall health and your risk of eye diseases. The eyedrops used for dilation cause your pupils to widen, allowing in more light and giving your doctor a better view of the back of your eye. Eye dilation assists your doctor in diagnosing common diseases and conditions, possibly at their earliest stages. They include:
In meiosis, DNA replication is followed by two rounds of cell division to produce four daughter cells each with half the number of chromosomes as the original parent cell.
The first cell division in Meiosis is known as Meiosis I. The function of Meiosis I is very different from that of either Mitosis or Meiosis II. In both Mitosis and Meiosis II sister chromatids are separated during anaphase to produce identical daughter cells. In Meiosis I members of homologous chromosome pairs are separated. This results in the segregation of genes into the two gametes. The principle of segregation is one of two core ideas in genetics proposed by Gregor Mendel. The segregation of any one pair of chromosomes is independent of any other pair.