1 If the black lines aren't visible on the external screen, the laptop screen may need to be replaced. 2  If the black lines are also visible on the external screen, the video card or motherboard may need to be replaced. 3  In some cases, a loose video card can cause problems with the monitor video.
1. segmentation - (embryology) the repeated division of a fertilised ovum. cleavage. embryology-the branch of biology that studies the formation and early development of living organisms. cell division, cellular division-the process in reproduction and growth by which a cell divides to form daughter cells.
translocation. n. 1. (Genetics) genetics the transfer of one part of a chromosome to another part of the same or a different chromosome, resulting in rearrangement of the genes. 2. (Botany) botany the transport of minerals, sugars, etc, in solution within a plant. 3. a movement from one position or place to another.