What is Whitefish prophase?
What is Whitefish prophase?
Prophase Whitefish Blastula Cell. Cell Division – Mitosis – in Whitefish Blastula Cells. The arrows (A) in the photo point to a cell in the prophase stage of mitosis. During this stage the chromosomes become visible, the nucleoli disappear, the nuclear membrane is broken down and the spindle begins to take form.
What stage of mitosis is this fish blastula labeled F in?
In anaphase (F), a full set of daughter chromosomes move towards each pole. Ana is Greek for up, towards or apart, and in this case, refers to the moving apart.
Which phase of mitosis is this Whitefish blastula cell in quizlet?
The 2nd phase of mitosis. The chromosomes cluster at the middle of the cell. Centromeres aline along equator of the spindle and form metaphase plate. Enzyme called seperase cleaves cohesin and triggers anaphase transition.
Which phase of the cell cycle is this fish cell in?
In most cases, FISH is performed on interphase blastomeres which are asynchronously dividing cells, that can be in G1, S or G2.
What happens in Whitefish interphase?
Early in interphase the cell (A) reaches its full size and then starts preparing for its next division. Preparation includes chromosome replication, replication of cellular organelles, including centrioles, and the synthesis of microtublule units. Distinct chromosomes are not visible to the microscope at this time.
What happens in Whitefish telophase?
During telophase the spindle is disassembled and the nuclear envelope reforms around the divided sets of chromosomes. The appearance of a cleavage furrow (1) marks the onset of cytokinesis and the end of the process of mitosis.
What is Whitefish interphase?
Interphase Whitefish Blastula Cell. Cell Division – Mitosis – in Whitefish Blastula Cells. This cell is in the interphase stage of the cell cycle. Early in interphase the cell (A) reaches its full size and then starts preparing for its next division.
What includes G1 S and G2 phases?
G1, S and G2 phases are all cumulatively referred to as interphase involving the growth of a cell and the replication of its DNA.
What happens in Whitefish anaphase?
Their separation is caused by the removal of microtubular units at the polar ends of the fibers (A) to which the chromosomes are attached. This process shortens the fibers and draws the chromosomes ever closer to the pole. In the diagram the separating sets of chromosomes are reaching the opposite poles of the cell.
Why do fish embryos demonstrate mitosis?
The whitefish embryo is a good place to look at mitosis because these cells are rapidly dividing as the fish embryo is growing. The onion root is also a good place because this is the area where the plant is growing.