"like begets like"
the phrase that refers to the ability of organisms to asexually reproduce their own kind
ex. maple trees produce maple trees, etc.
does not apply to sexual reproduction because the offspring is not genetically identical to the parents
A threadlike, gene-carrying structure found in the nucleus. Each chromosome consists of one very long DNA molecule and associated proteins.
after the chromosomes are duplicated, the chromosomes contain two ________, proteins attached together that contain identical copies of the same DNA molecule
An ordered sequence of events in the life of a eukaryotic cell, from its origin in the division of a parent cell until its own division into two.
During _____ the cell grows and replicates both its organelles and its chromosomes.
lasts for most of the cell's lifetime
Cell's division (PMAT) of the nucleus. Final product is 2 cells that are exactly like the parent cell.
-Chromosomes attach to microtubules at the kinteochore(black dot protein thingy that helps move the chromosome), forming a spindle
Chromosomes align in the middle of the cell (metaphase plate) with their homologous pair
The centromeres (chromosome waist) are all aligned
the chromatids of each chromosome separate at the centromere and move in opposite directions toward each end of the pole
Cell finishes dividing, chromosomes lengthen and become thinner, nuclear membrane reappears, cytoplasm gets divided up evenly
The area of the cell membrane that pinches in and eventually separates the dividing cell
cytokinesis in plant cells
vesicles containing cell wall material collect at the middle of the parent cell, forming a cell plate
The phenomenon observed in normal animal cells that causes them to stop dividing when they come into contact with one another.
cell cycle control system
A cyclically operating set of molecules in the cell that triggers and coordinates key events in the cell cycle.
Like how the pituitary gland is like "time for puberty"
Do not have a properly functioning cell-cycle system; instead, they divide excessively and can invade other tissues of the body
A cancerous tumor that is invasive enough to impair the functions of one or more organs.
A haploid cell such as an egg or sperm. Gametes unite during sexual reproduction to produce a diploid zygote.
Process in which homologous chromosomes exchange portions of their chromatids during meiosis.
A condition of retardation and associated physical disorders caused by an extra copy of chromosome 21.
Change in chromosome structure in which a particular segment is present more than once in the same chromosome
A chromosomal fragment breaks off and reattaches to its original chromosome but in the reverse orientation
Change to a chromosome in which a fragment of one chromosome attaches to a nonhomologous chromosome