Location of Illinois in the United States. Coordinates: 42Â°4â²34â³N 88Â°1â²33â³W / 42.07611Â°N 88.02583Â°W / 42.07611; -88.02583Coordinates: 42Â°4â²34â³N 88Â°1â²33â³W / 42.07611Â°N 88.02583Â°W / 42.07611; -88.02583. Rolling Meadows is a city in Cook County, Illinois, United States.
In meiosis I, chromosomes in a diploid cell resegregate, producing four haploid daughter cells. It is this step in meiosis that generates genetic diversity. Prophase I. DNA replication precedes the start of meiosis I. During prophase I, homologous chromosomes pair and form synapses, a step unique to meiosis. The paired chromosomes are called bivalents, and the formation of chiasmata caused by genetic recombination becomes apparent.
These stages are prophase, prometaphase, metaphase, anaphase, and telophase. During mitosis, the chromosomes, which have already duplicated, condense and attach to spindle fibers that pull one copy of each chromosome to opposite sides of the cell. The result is two genetically identical daughter nuclei. The rest of the cell may then continue to divide by cytokinesis to produce two daughter cells. Producing three or more daughter cells instead of normal two is a mitotic error called tripolar mitosis or multipolar mitosis (direct cell triplication / multiplication).