Example of a human karyotype: 23 pairs of homologous chromosomes (one pair is the homologous 'sex' chromosomes - in this case X and Y = a boy) III. Meiosis reduces chromosome number from diploid (2n) to haploid (n) 1 diploid cell (2n) cell becomes 4 haploid (n) germ cells (eggs or sperm).
closed plan. noun. 1. an office floor plan consisting of fully enclosed office spaces. Compare open plan.
closed circuit. 1. Live electrical circuit through which current is flowing. 2. Transmission of audio and/or video signals within a small area such as a conference hall, hotel, or home. Closed circuit television (CCTV) is used also for monitoring and security purposes.