Friday, March 6, 2020
Mitosis Diagram Online Biology Tutors Tutorpace
Mitosis Diagram Online Biology Tutors Tutorpace Mitosis is a type of cell division in which the newly formed daughter cells are having the same chromosome number as that of their parent cell. There are two stages: Karyokinesis: division of the nucleus Cytokinesis: division of the cytoplasm. Mitosis includes prophase, metaphase, anaphase, telophase and cytokinesis. PROPHASE:At the beginning of mitosis or early prophase the tangled mass of chromatin fibers become condensed to form short rod like structures called the chromosomes.During late prophase each chromosome splits longitudinally except at centromere in to two halves called chromatids.The chromosome becomes more thick and short. METAPHASE: the chromosomes attain their maximum condensation;the spindle fibers extend to the equator of these cells and organize into the spindle apparatus.The chromosomes now move towards the center of the cell and get themselves arranged at the equator of the spindle apparatus by means of their centromere region. ANAPHASE: the centromere of each chromosomes divide longitudinally, it results in the completion of the division of the chromosome in to two distinct and separate identical chromatids.The spindle fibers that are attached to the centromere of the chromosome now contract and the sister chromatids move to the opposite TELOPHASE:The two sets of chromosomes that reach the opposite poles arranged in to two groups. They are now organized in to two daughter nuclei by the reappearance of the nuclear envelope; chromosomes uncoil in to chromatin fibers. Nuclear membrane and nucleolus reappears. The spindle fibers disappear. CYTOKINESIS:The division of cytoplasm takes place resulting in the formation of two daughter cells.
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