Chromosomes
What will condense to form chromosomes just before the cell divides?
Chromatin
Cellular contents, excluding chromosomes are duplicated.
G1
Sister chromatids are separated in ____.
Independent assortment takes place in…
Metaphase I
Plant cells typically do not have _____.
Centrioles
Somatic cells have 46 chromosomes and are _______ cells.
Diploid
Each of the 46 chromosomes is duplicated by the cell.
S phase
The cell forms a cleavage furrow in _____.
Cytokinesis
The place where crossing over occurs and genetic info is shared.
Chiasma
The ____ ____ prevents plant cells from having cleavage furrows.
Cell wall
Cell division distributes chromosomes so every cell will get the full number of ____.
DNA
The cell cycle needs to be regulated because uncontrolled cell proliferation is not good, stimulatory substances within the cytoplasm tell the cell when it is “ok” to move on to each phase, these are called ________.
Checkpoints
A contractile ring made of ___ pinches the cell into two during cytokinesis.
Actin
2 pairs of homologous chromosomes come together and form a ____ during prophase I.
Tetrad
In plant cells, the Golgi apparatus produces a membranous sac that fuses to form a ____ ____ and releases molecules to produce the cell wall.
Cell plate
Organisms that are 2n (diploid), are ______ reproducing.
Sexual
Cell cycle arrest, no longer duplicating and in cell cycle.
G0
The nucleolus disappears in ____.
Prophase
Oogenesis produces 3 _____ and 1 egg.
Polar bodies
Prokaryotes reproduce through _____ reproduction.
Asexual
In ranking the nitrogenous base, nucleotide, chromosome, segment of DNA, gene and genome from smallest to largest from 1-6, what would chromosome be?
5
____ cells are in the phase of G0.
Brain; nerve; heart
The kinetochore starts to break down in _____.
Anaphase
During meiosis, if the spindle fibers do not separate the chromosomes properly _____ occurs.
Nondisjunction
Prokaryotes have a single circular chromosome called a nucleoid and divides through ____ ____.
Binary fission