DNA is organized around a _ called _.
Chromosomes are only in _ cells.
Prokaryotic cells (bacteria) have _ _ (_ _)
naked DNA, no histones
Chromosomes are made up of _ _ that are held together by a _ (_ _)
2 chromatid, centromere, protein disk
chromosome in dividing cell, thick & condensed, can count the number
chromosome in nondividing cell, thin and stringy, can't count the number
5 repeating stages of growth and division.
_ and _ are growth stages of cell cycle.
g1 and g2
splitting of cytoplasm; at the end the cell splits into 2 cells
G1, S, and G2
mitosis and meosis and cytokinesis
Mitosis produces _ _ daughter cells fom one mother cell and each has the _ number of chromosomes as the mother cell.
2 identical, same
only in animal cells, help cell division
plants cells form a _ _ to _ daughte cells
cell plate, separate
Bacteria divide by _ _, which is when they double _ and _.
binary fission, DNA, split
Mitosis is _ reproduction
Mitosis has four stages:
prophase, metaphase, anaphase, telaphase
Prophase is when the nuclear membrane starts _, chromosomes appear as _, and _ _ appear.
dissolving, chromatid, spindle fibers
Metaphase is when chromosomes line up in the _, nuclear membranes _, spindle fibers _ to _.
middle, disappear, attach, chromosomes
Anaphase is when spindle fibers _ chromatid _, chromatids move to _ of cell
pull, apart, poles
Telophase is almost the opposite of _, _ _ forming, spindle fibers _, Chromosomes appear a _
prophase, disappear, chromatin
Cytokinesis begins at the end of _.
At the end of cytokinesis, _ _ daughter cells are formed.
'M' is cell cycle can be _ (asexual) or _ (sexual)
produced by mitosis, sex cells, sperm and egg, specialized reproductive cells
body cells prodced by mitosis
"n" cell with only 1 set of chromosomes.
"2n" cell with 2 sets of chromosomes (one from eac parent).
2 _ fuse together to form a _
chromosomes XX =
chromosomes XY =
remaining chromosomes in each cell excludin sex hormones, give you your traits
Meiosis is the _ reproduction in which _ are formed.
In meiosis, the number of chromosomes in gametes is _ of the number in the mother cell
Meiosis is divided into 2 steps:
Meiosis I and Meiosis II
Meiosis produces _ _ cells.
matching chromosome pairs in a DIPLOID cell (one in each parent)
In Meiosis, _ pair up - called _/_
Sometimes homologs cross over and may exchange _ which is called _ _. This leads to _ _.
DNA, reciprocal excahnge, genetic variation
proteins that control the cell cycle
cells that have lost control of the cell cycle, localized
same as tumor, but it can spread
uion of a sperm and eg or union of 2 gametes
diploid product of fertilization (offspring/baby)