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All you need to know about Mitosis if you are in the 7th Grade :)

What is mitosis? Chromosomes multiply and divide when the cell reproduces daughter cells that are identical to the parent cell; cells divide
What is chromatin? Uncoiled strand of DNA
What are chromosomes? Coiled chromatin; contains genes
What are genes? Segments of DNA on a chromosome that codes for a certain hereditary trait
What is a chromatid? One part of a duplicated chromosome
What does a centromore do? Attaches the 2 chromatids together
What are homologous pairs? Chromosome pairs that are structurally similar and contain information for same genes
Where does Mitosis occur? Human body (or somatic) cells; this is every cell except the egg and the sperm
How many chromosomes does a body (or somatic) cell have? 46 Chromosomes; 23 pairs of homologous pairs
What are diploid cells? They contain all homologous pairs of chromosomes
What are the 6 stages of cell division? Interphase, Prophase, Metaphase, Anaphase, Telophase, Cytokinesis
What is Interphase? Chromosomes (in the form of chromatin) and organelles replicate
What is Prophase? Chromatin coils into chromosomes; In animal cells centrioles appear at the sides of the cell; Spindle fibers form
What is Metaphase? Chromosomes move to the center of the cell
What is Anaphase? Chromosomes divide and chromatids separate; Chromosomes are pulled to opposite sides pulled by spindle fibers
What is Telophase? Centrioles and spindle fibers disappear; Chromatids unwind into chromatin; Nuclear membrane reforms
What is Cytokinesis? Cytoplasm in parent cell divides; there are now 2 daughter cells that have DNA identical to the parent cell; This leads to another phase of interphase where the cells divide again... It is a continuous cycle
Created by: 19whorsthemke