They form from chromatin at the poles of the nucleus.
moving apart
Crossing over occurs during Prophase I of meiosis.
Centrioles help divide DNA during cell division.
because the most things happen in it. centrioles grow, spindle fibers arrange on chromosomes, and the cell grows exponentially.
During prophase, the nuclear membrane and the nucleolus dissolve and disappear.
They are visible during mitosis. During Prophase the DNA is compacted into Chromosomes while the intermediate filaments that make up the Nuclear Envelope are phosphorylated and it falls apart. Leaving behind the chromosomes, very easy to see throughout prophase, metaphase, anaphase and telophase (Until the nucleus reforms in both daughter cells and the chromosomes de-condense). Chromosomes are easy to see by definition, their name in greek literally means colored bodies, this mostly because the guy that saw them first had no idea what they were.
Spindle fibers are thin tubes that form between the centrioles during mitosis. True..
The centrioles move toward opposite poles during prophase. During prophase the nuclear membrane disintegrates. Spindle fibers appear during the prophase.
Centrioles double during the prophase of mitosis. Prophase is also the phase where DNA enters the chromosomes and are replicated.
moving apart
Prophase- during prophase, chromatids shorten and thicken, nucleoli disappears, spindle fibers form and centrioles in animal cells move to opposite ends.
The centrioles begin to move apart in the Prophase.
It's the CENTRIOLES and their star-like radiating structures, called asters.This is Stage 1 in Mitosis:Chromatin in the nucleus condenses to form chromosomes. The pairs of centrioles move to the opposite sides of the nucleus. Spindle fibers form a bridge between the ends of the cell. The nuclear envelope breaks down.
prophase
CENTRIOLES
prophase
False they are at poles during anaphase and metaphase.
Prophase