During what stage of mitosis does chromatin condense into chromosomes?
During what stage of mitosis does chromatin condense into chromosomes?
prophase
What part of mitosis does chromatin condense into chromosomes?
Prophase
What stage of mitosis do spindle fibers form?
Which stage of the cell cycle shows the formation of spindle fibers and chromatin condensing into chromosomes?
During prophase, the nucleus disappears, spindle fibers form, and DNA condenses into chromosomes ( sister chromatids ).
What is the spindle composed of?
The mitotic spindle is a highly dynamic molecular machine composed of tubulin, motors, and other molecules. It assembles around the chromosomes and distributes the duplicated genome to the daughter cells during mitosis.
In which type of cell division spindle is not formed?
Cells cannot divide without spindle fibre. Because, during Anaphase Spindle fibres get attached to the Kinetochore resulting in the pull apart of the sister chromatids of the Chromosomes followed by division of cytoplasm (Cytokinesis) and which is the most important step of cell division.
What is the main function of a microtubules?
Microtubules are filamentous intracellular structures that are responsible for various kinds of movements in all eukaryotic cells. Microtubules are involved in nucleic and cell division, organization of intracellular structure, and intracellular transport, as well as ciliary and flagellar motility.
How do Microtubules assemble?
They are formed by the polymerization of a dimer of two globular proteins, alpha and beta tubulin into protofilaments that can then associate laterally to form a hollow tube, the microtubule. The most common form of a microtubule consists of 13 protofilaments in the tubular arrangement.
How are microtubules involved in cell division?
Microtubules play an important role in cell division by contributing to the formation of the mitotic spindle, which plays a part in the migration of duplicated chromosomes during anaphase. The two poles of the spindle, made from microtubule structures, help to segregate and separate duplicated chromosomes reliably.
In what phase do spindle microtubules disassemble?
telophase
Which is true of benign tumors?
A benign tumor is not a malignant tumor, which is cancer. It does not invade nearby tissue or spread to other parts of the body the way cancer can. In most cases, the outlook with benign tumors is very good. But benign tumors can be serious if they press on vital structures such as blood vessels or nerves.