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deoxyribonic acid, a molecule that is present in all living cells and that contains the infromation that determines the traits that a living thing inherits and needs to live. DNA
In a eukaryotic cell, one of the structures in the nucleas that are made up of DNA and protien; in a prokaryotic cell, the main ring of DNA Cromosones
The life cycle of a cell Cell Cycle
The period of the cell cycle during wich the activities such as cell growth and protien synthesis occur without visible signs of cell division Interphase
In eukaryotic cells a process of cell division that forms two new nuclei each of which has the same number of chromeosomes Mitosis
The divition of cytoplasm of a cell Cytokinesis
Cromosomes that have the same sequence of genes and the same structure Homologous Chromosomes
A process in cell division during which the number of cromosomes decreases to half the original number by two divisions of the nucleus which results in production of sex cells Meisosis
reprudoction that does not involve the formation of sex cells and in which one parent produces offspring that are genetically identical to the parent Asextual Reproduction
reproduction in which the sex cells from two parents unite to produce offspring that share traits from both parents. Sextual Reproduction
The union of a male and female gamete to form a zygote Fertalization
Describe the way organisms reproduce Asextual The four ways are Binary Fission,Budding,Spores,and Vegetable Reproduction.
The chromosomes in the nucleus of a cell condence. The membrane around the nucleus breaks down Prophase
Chromosomes line up in the middle of the cell . Centromeres of the chromosomes are the same distance from each side of the cell. Metaphase
The chromatids seperate. They are pulled to oposite sides of the cell. Each side of the cell ends up with a complete set of chromosomes. Anaphase
A new nuclear membrane forms around each group of chromosomes. The cell now has two identical nuclei. They become less condensed. Cytokinesis begins during this phrase. Telophase
The chromosomes are copied before the meiosis begins. The duplicated chromosomes each made of two chromatids pair up. Prophase 1
After the nuclear membrane breaks down, the chromosomes pairs line up in the middle of the cells. Metaphase 1
The chromosomes seperate from their partners and then move to opposite ends of the cell. Anaphase 1
The nuclear membranes re-form and the cell divides into two cells. The chromatids are still joined Telophase 1 and Cytokinesis
The chromosomes are not copied again before meiosis 2. The nuclear membrane breaks down. Prophase 2
The chromosomes line up in the middle of each cell. Metaphase 2
The chromatids are pulled apart and move to opposite sides of the cell Anaphase 2
The nuclear membranes re-form and the cells divide. Four new haploid cells are formed. Each has half the usual number of chromosomes. Telophase 2 and cytokinesis
Created by: rl.6797
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