Frequent question: Are spindles present in prophase?

Is there a spindle in prophase?

During prophase, the complex of DNA and proteins contained in the nucleus, known as chromatin, condenses. … The mitotic spindle is made of long proteins called microtubules that begin forming at opposite ends of the cell. The spindle will be responsible for separating the sister chromatids into two cells.

Where are the spindles in prophase?

Prophase: Spindle fibers form at opposite poles of the cell.

What happens in prophase of meiosis?

During prophase I, the complex of DNA and protein known as chromatin condenses to form chromosomes. … A large structure called the meiotic spindle also forms from long proteins called microtubules on each side, or pole, of the cell. Between prophase I and metaphase I, the pairs of homologous chromosome form tetrads.

What is a major feature of prophase in mitosis?

Mitosis begins at prophase with the thickening and coiling of the chromosomes. … The end of prophase is marked by the beginning of the organization of a group of fibres to form a spindle and the disintegration of the nuclear membrane.

What happens in prophase simple?

prophase. [ prō′fāz′ ] n. The first stage of mitosis, during which the chromosomes condense and become visible, the nuclear membrane breaks down, and the spindle apparatus forms at opposite poles of the cell.

IT IS INTERESTING:  Your question: What is the beginning of meiosis?