when a cell undergoes reproduction, the two "daughter" cells that result are genetically identical to each other and to the original "parent" cell.
thread like structures that have genetic info that is passed down from one generation to the next
single celled organisms that reproduce by dividing in half, and the offspring are genetic replicas
requires fertilization of an egg by a sperm
a form of asexual reproduction in single-celled organisms by which one cell divides into two cells of the same size
long strands of DNA found in the eukaryotic cell nucleus; condense to form chromosomes
two identical copies of a parent chromosome which are attached to one another at the centromere.
area where the chromatids of a chromosome are attached
the regular sequence of growth and division that cells undergo
a period between two mitotic or meiotic divisions during which the cell grows, copies its DNA, and synthesizes proteins
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
the stage in mitosis or meiosis in which the duplicated chromosomes line up along the equatorial plate of the spindle
the third phase of mitosis, during which the chromosome pairs separate and move toward opposite poles
the final stage of mitosis or meiosis, during which a nuclear membrane forms around each set of new chromosomes
The cytoplasm completely splits, organelles divide and are split between the 2 new cells
football-shaped structure of microtubules that guides the separation of the two sets of daughter chromosomes
regions of cytoplasmic material that in animal cells contain structures called centrioles
the area of the cell membrane that pinches in and eventually separates the dividing cell
A double membrane across the midline of a dividing plant cell, between which the new cell wall forms during cytokinesis.
signal cell cycle control system
The requirement that a cell must be attached to a substratum in order to divide.