Chapter 8 Cell division Mitosis/Meiosis Review. This spot that holds the 2 chromatid copies together is called a ______________________. centromere. The phase of the cell cycle in which cells stop dividing all together. G 0. Binary fission. Cell division in bacteria cells is called
The phase of the cell cycle
in which cells stop dividing all together.
Cell division in bacteria cells is called
Phase of the cell cycle in which
DNA is copied
This organized picture
of an individual’s chromosomes is called
This person is a _____________.
female (has XX)
The proteins that help wrap up the DNA into chromosomes are ______________________
Phase of the cell cycle
In which the nuclear membrane is presentand DNA is spread out into chromatin.
centromere where the
spindle fibers attach is
called the ___________________
List the phases of mitosis in orderstarting with prophase.
Prophase, metaphase, anaphase, telophase, cytokinesis
Phase of mitosis that followsanaphase
Phase of the cell cycle that follows G2
This cell is in__________________
Humans have ______ chromosomes.
Type of cell division in eukaryoticcells that results in 2 identical daughter cells.
offspring come from
the DNA of just one parent is called _____________ reproduction
The dark colored spot near the nucleus that contains the centrioles
when the cell is not dividing is the
The 2 chromosomes that determinethe sex of an individual are called__________________________
G1, S, and G2 make up this phaseof the cell cycle.
Sperm and eggs are __________ cells.haploid diploid
This person is a_______________
Male (has XY)
on and off of specific regions of DNA
One of 2 identical armsthat make up a chromosome
A cell that contains two copies ofeach chromosome is said to be
Humans have 2 sex chromosomesand 44 _______________.
Plant cells can’t pinch to divide, instead they form a _______________
This phase of thecell cycle is______________
Cell which contains only 1 copy ofeach of the chromosomes
This phase of the
cell cycle is
Phase of the cell cycle cells spend
most of their time in.
Type of eukaryotic cell divisionwhich produces cells with ½ thenumber of chromosomes as the original cell.
Phase of mitosis that followsprophase
Phase of the cell cycle that follows S
DNA that is all spread out inan interphase nucleus is called________________
Phase of mitosis in which thenuclear membrane and nucleolusdisappear and the DNA scrunches into chromosomes.
The 2 copies of each chromosomeare called ______________ chromosomes because are the same size,
same shape, and carry genes for thesame traits.
A karyotype can tell us ____________
The sex of the organism
AND if they have missing/extra chromosomes
When chromatin scrunches together it is called a _________________
If the body cells of an organismhave 24 chromosomes, how manywould be in a sperm or egg cell?
12; Sperm and eggs have ½ the number of chromosomes as body cells
False; only 40 chromosomes Humans have 46
Phase of mitosis in which chromsomesline up in the middle of the cell.
Used by organisms to grow in size
Makes 4 haploid cells
Crossing over happens
Used to make gametes
Makes identical 2n cells
Used to repair injuries or
replace worn out cells
This phase iscalled _______________
Dark spots next to thenucleus that contain the centrioles.
Phase of mitosis that followsmetaphase
Phase of the cell cycle that follows G1
This cell is in___________
Phase of cell division in whichthe nuclear membrane returns andchromosomes spread out into chromatin.
This cell is in__________
The cell above is a _________ cell.
You can see the cell plate forming in center insteadof a cleavage furrow.
The person in this karyotype has anextra number #21 chromosome. She has ________ syndrome.
Phase of the cell cycle in which cells
stop dividing all together
The very first dividing phase is_______________
How can you tell?
Homologous pairs line up, crossing over happens; end up with 4 cells that have ½ the chromosome number you started with
This is called a ______________
This cell is _____________ cell.
an animal a plant
an animalPlants don’t have cleavage furrows.
Type of cell division used to make
List the phases of mitosis in orderstarting with interphase
Interphase, prophase, metaphase, anaphase, telophase, cytokinesis
Crossing over & independent assortment
How is INTERPHASE II differentfrom INTERPHASE I?
DNA is NOT copied during interphase II and it is in interphase I
The group of 4 chromatid arms
above is called a ___________
Makes 2 diploid (2n) cells Makes 4 haploid (1n) cells
Divides once Divides twice/copies DNA once
Makes body cells Makes gametes (sperm/eggs)
Makes cells identical to parent Makes cells with ½ the number
of chromosomes of parent
No genetic recombination Crossing over/independent assortment allow for genetic recombination
Used to grow in size, Used to make reproductive repair injuries, cells
replace worn out cells
No synapsis of homologous pairs Homologous pairs line up together
Tell 2 ways mitosis and meiosis are different
determine the organism’s sex are
Type of cell division in whichgenetic recombination can happen.
Humans have ? Chromosomes.
46 (23 pairs)