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Vocabulary Words

Mitosis & Meiosis

TermDefinition
Mitosis A type of cell division that results in two daughter cells.
Cytokinesis The cytoplasmic division of a cell at the end of mitosis or meiosis, bringing about the separation into two daughter cells.
Replication The action of copying or reproducing something.
Cell Cycle The cell cycle or cell-division cycle is the series of events that take place in a cell leading to its division and duplication of its DNA
Chromosomes Chromosomes are the things that make organisms what they are. They carry all of the information used to help a cell grow, thrive, and reproduce
Chromatid Each of the two threadlike strands into which a chromosome divides longitudinally during cell division
Centromere The point on a chromosome by which it is attached to a spindle fiber during cell division.
Chromatin The material of which the chromosomes of organisms other than bacteria (i.e., eukaryotes) are composed. It consists of protein, RNA, and DNA
Diploid Containing two complete sets of chromosomes, one from each parent.
Interphase the resting phase between successive mitotic divisions of a cell, or between the first and second divisions of meiosis.
Crossing over the exchange of genes between homologous chromosomes, resulting in a mixture of parental characteristics in offspring.
Tetrad a group or set of four.
Synapsis the fusion of chromosome pairs at the start of meiosis.
Polar bodies each of the small cells that bud off from an oocyte at the two meiotic divisions and do not develop into ova.
Gametogenesis the process in which cells undergo meiosis to form gametes.
Gonad an organ that produces gametes; a testis or ovary.
Gamete a mature haploid male or female germ cell that is able to unite with another of the opposite sex in sexual reproduction to form a zygote.
Ovum/ ova a mature female reproductive cell, especially of a human or other animal, that can divide to give rise to an embryo usually only after fertilization by a male cell.
Sperm the mature motile male sex cell of an animal, by which the ovum is fertilized, typically having a compact head and one or more long flagella for swimming.
Haploid having a single set of unpaired chromosomes.
Created by: LilliamWRuizBaez