5/2/2023 0 Comments Define prophase![]() ![]() During prophase, the cell prepares itself in various ways for the division that occurs in later stages. There are 23 pairs of chromosomes in a diploid human body cell. The transcription machinery requires access to the genetic information throughout the cell cycle, while replication machinery will copy the DNA during S-phase. In biology, the very first stage of cell division is known as prophase. Only two pairs of chromosomes are shown in the diagrams below. Its goal is to make daughter cells with exactly half as many chromosomes as the starting cell. The stages of mitosis are: prophase, metaphase, anaphase and telophase. The cell membrane pinches in and eventually divides into two daughter cells. ![]() New membranes form around the chromosomes at each end of the cell. The process of mitosis is divided into five phases: prophase, prometaphase, metaphase, anaphase, and telophase. Mitosis is a type of cell division in which a single eukaryotic cell divides into two genetically identical daughter cells. The membrane around the nucleus disappears.Ĭhromosomes and their copies line up in the middle of the cell.Ĭhromosomes and their copies are pulled to different ends of the cell. The different phases in mitosis are prophase, prometaphase, metaphase, anaphase, and telophase. The DNA in chromosomes and their copies condenses to become more visible. The DNA in chromosomes copies itself ready for mitosis. ![]() The cell spends most of its life in this phase. Every base pair of their DNA is identical. The daughter cells are clones of each other. Mitosis is a type of cell division in which a diploid body cell copies itself and finally divides into two identical diploid daughter cells. ![]()
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