Gene
Heredity units in DNA; a segment of DNA that codes for RNA and protein
Chromosome
Structures in which DNA is organized and packaged
Chromatin
DNA wrapped around protein molecules
Histone
The proteins around which DNA wraps; the proteins in chromatin
Nucleosome
The structure made up of a histone core and the DNA around it
Chromatid
Each of the two thick strands in a fully condensed, duplicated chromosome
Centromere
A region of sister chromatids where they are joined to each other
Cell cycle
A repeating sequence of cellular growth and division during the life of a cell
Interphase
The first three phases of the cell cycle; G1 & S &G2; the time in-between cell division
Mitosis
The process of dividing the nucleus into two daughter nuclei
Cytokinesis
The process of separating of organelles and cytoplasm into two cells.
Spindle
A specialized structure outside of the nucleus that is made up of microtubules
Centrosome
A structure that helps form the spindle and in the animal cells includes centrioles
cancer
A group of severe and sometimes fatal diseases that are caused by uncontrolled cell growth
tumor
A mass of cells formed when cells divide uncontrollably