Meiosis 1. By: Shirelle Ruffin Biology Honors January 5, 2012. Meiosis is a process of nuclear division that reduces the number of chromosomes in new cells to half the number in the original cell. Produces gametes (which are haploid reproductive cells.). PROPHASE 1.
By: Shirelle Ruffin
January 5, 2012
Produces gametes(which are haploid reproductive cells.)
Crossing over permits the exchange of genetic material between maternal and paternal chromosomes.
During telophase 1 the chromosomes reach the opposite ends of the cell and cytokinesis begins, which means the new cells contain a haploid number of chromosome.
Haploid cells have only one autosome of each homologous pair and only one sex chromosomes. (23 total)
Haploid cells have half the number of chromosomes that are present in diploid cells.
*When a sperm cell and egg cell combine to create the first cell of a new organism the new cell will be diploid.