Nuclear division process that halves the chromosome number. Basis of sexual reproduction., (genetics) cell division that produces reproductive cells in sexually reproducing organisms
Nuclear division mechanism that maintains the chromosome number. Basis of body growth, tissue repair and replacement in multicelled eukaryotes; also asexual reproduction in some plants, animals, fungi, and protists.
A series of events from the time a cell forms until its cytoplasm divides.
Refers to the two members of a pair of chromosomes with the same length, shape, and genes.
In a eukaryotic cell cycle, the interval between mitotic divisions when a cell grows, roughly doubles the number of its cytoplasmic components, and replicates its DNA.
Stage of mitosis in which sister chromatids separate and move to opposite spindle poles.
Stage of mitosis during which the cell's chromosomes align midway between poles of the spindles.
Stage of mitosis in which chromosomes condense and become attached to a newly forming spindle.
Dynamically assembled and disassembled array of microtubules that moves chromosomes during nuclear division.
Stage of mitosis during which chromosomes arrive at the spindle poles and decondense, and new nuclei form.
Reproductive mode by which offspring arise from one parent and inherit that parent's genes only.
After nuclear division in a plant cell, a disk-shaped structure that forms a cross-wall between the two new nuclei.
In a dividing animal cell, the indentation where cytoplasmic division will occur.
A genetically identical copy of an organism.
A thin band of actin and myosin filaments that wraps around the midsection of an animal cell. During cytoplasmic division, the band contracts and pinches the cytoplasm in two.
Forms of a gene that encode slightly different versions of the gene's product.
Fusion of a sperm nucleus and an egg nucleus, the result being a single-celled zygote.
Mature, haploid reproductive cell.
Having one of each type of chromosome characteristic of the species.
Reproductive mode by which offspring arise from two parents and inherit genes from both.
Cell formed by fusion of gametes; first cell of a new individual.
Process in which homologous chromosomes exchange corresponding segments during meiosis.
Mature female gamete, or ovum.
Mature male gamete