SOMATIC CELL CYCLE Flashcards
associated with tissue formation and regeneration (gen term for body cell)
somatic cells
specialized reproductive cells: gametes & precursors
germ cells
what are the 3 division of somatic cell?
- nuclear division
- mitosis
- cytoplasmic division
it is a contractile ring of actin and myosin that pinches the cell wall and divides the cytoplasm
nuclear envelope
True or False
In Mitosis the 4 daughter cells produced are genetically identical
False
X 4 Daughter cells
✅ 2 DC
True or False
The nuclei of somatic cells have randomized number of chromosomes
False
randomized
✅ defined
of chromosomes in Sheep
54
of chromosomes in Cattle
60
of chromosomes in Goat
60
of chromosomes in Chicken
78
of chromosomes in Dog
78
of chromosomes in Donkey
62
of chromosomes in Horse
64
Phase where protein synthesis happens
Interphase
Phase where condensed centrosomes forms microtubule spindles
prophase
Phase where nuclear membrane disappears
Metaphase
Phase where double chromatid chromosome align along the nuclear equator
Metaphase
phase where two chromatids per chromosome separate as the
centromere divides
Anaphase
phase where newly separated chromatid sets are drawn towards
opposite pole of the cell
Anaphase
Phase where chromosomes becomes invisible and nuclear membrane reappears
Telophase
Gate Keeper that inhibits Retinoblastoma
CDK4 Cyclin D Complex
Rb protein inhibits the ____?
DNA Replication
This gate keeper activate mitosis
CDK1 Cyclin B
Where does the CDK1 produced?
G2
CDK4 is the gate keeper of? what phase of interphase
G1
What type of cell division that produces 2 haploid germ cell? (2 chromatid)
Meiosis 1
2 enzymes in the acrosome that will aid in penetrating the egg cell
Hyaluronidase & Acrosin
what phase does the first arrest happens?
Prophase 1 of meiosis 1
what phase does the second arrest happens?
Metaphase 2 of meiosis 2
How many daughter cells produced in meiosis 2 after being divided by cytokinesis?
Four haploid cells
During the Telophase of Mitotic division, when can you say that its the end of mitosis?
When nuclear envelope reappears and is formed
what is the common difference between mitosis and meiosis?
Meiosis has genetic recombination or crossing over of chromosome from both parents, while mitosis don’t have
