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20 terms

Std 6 Vocabulary

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anaphase
the third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles
asexual reproduction
process by which a single parent reproduces by itself
cancer
disorder in which some of the body's own cells lose the ability to control growth
cell cycle
series of events that cells go through as they grow and divide
centromere
area where the chromatids of a chromosome are attached
chromatid
one of two identical "sister" parts of a duplicated chromosome
crossing over
process in which homologous chromosomes exchange portions of their chromatids during meiosis
cytokinesis
division of the cytoplasm during cell division
diploid (2n)
term used to refer to a cell that contains both sets of homologous chromosomes
egg
Female sex cell
haploid (n)
term used to refer to a cell that contains only a single set of chromosomes and therefore only a single set of genes
interphase
period of the cell cycle between cell divisions
meiosis
process by which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell
metaphase
second phase of mitosis, during which the chromosomes line up across the center of the cell
mitosis
part of eukaryotic cell division during which the cell nucleus divides
prophase
first and longest phase of mitosis, during which the chromosomes become visible and the centrioles separate and take up positions on the opposite sides of the nucleus
sexual reproduction
process by which cells from two different parents unite to produce the first cell of a new organism
sperm
Male sex cell
spindle
fanlike microtubule structure that helps separate the chromosomes during mitosis
telophase
fourth and final phase of mitosis, during which the chromosomes begin to disperse into a tangle of dense material