cell division part 1

28 terms by MzSlim14 

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chromatin

Eukaryotic cell not dividing, DNA is threads

chromosomes

During cell division chromatin condenses to become

diploid

(2n) chromosomes in body cells

haploid

(n) chromosomes in gametes

kinase

an enzyme that removes a phosphate group from ATP and adds it to another protein

cyclin

Kinases in cell cycle are activated when they combine with a protein

interphase

before a cell actively divides, it must grow and duplicate much of its contents, so that two cells can form from one
used to describe all parts of cell cycle except the M stage

mitosis

nuclear division that produces two daughter nuclei, each with the same number and kinds of chromosomes as the parental nucleus

spindle

brings about orderly distribution of chromosomes

aster

short microtubules radiate from centrosome

somatic cells

every cell in your body but your egg cells; 99.9% of cells for women

synapsis

During meiosis I the homologous chromosomes pair up

independent assortment

means that the homologous chromosomes separate independently or in a random manner

cell cycle

the series of changes a cell undergoes from the time it forms until it divides

cell division

division of a parent cell into daughter cells

centriole

structure that helps to form the spindle

telophase

last phase of mitosis, chromosome are in two new cells and nuclear membranes start to reform

mitosis

division of the nucleus or chromosomes

metaphase

phase of mitosis in which chromosomes line up in the center of the cell

prophase

first phase of mitosis in which chromosomes become visible and nuclear membraine disappears

cytokinesis

division of the cytoplasm (cytosol and organelles)

anaphase

phase of mitosis in which sister chromatids are pulled to opposite sides of the cell

cancer

uncontrolled cell division

G1 phase

stage of interphase in which cell grows and performs its normal functions

S phase

stage of interphase in which DNA is replicated

G2 phase

stage of interphase in which cell duplicates its cytosol and organelles

meiosis

type of cell division that creates gametes; cell divides twice to create four cells that are genetically unique

crossing-over

process by which homologous chromosomes exchange pieces, resulting in greater genetic variety

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