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24 Cards in this Set
- Front
- Back
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Chromatin
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Combination of dna and protiens that make up a cell
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Chromosome
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Organized structure of dna in a cell
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daughter cell
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smaller segment of a parent cell
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mitosis
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cell is seperated into two identical sets
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cytokinesis (cleavage Furrow)_
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cytoplasm in a single cell is divided into two daughter cells
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prophase
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First cycle in cell development where the chromasomes barely become visible and start to group together
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metaphase
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Second step in cell division where the chromasomes group tword the middle of the cell
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anaphase
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third step in cell division where the chromasomes start to split apart from their copys
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telophase
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the chromasomes are seperated from their copys and the new cell wall, or cleavage furrow has started to grow
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diploid
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2 pairs of chromasomes
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Haploid
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one set of chromasomes (sex cell)
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cell cycle
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series of events that lead up to duplication and division of a cell
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meiosis
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cell division of sex cells
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gamete
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sperm, egg
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spermatogenesis
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sperm cells undergo meiosis and produce more sprem cells
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oogenesis
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creation of egg cell
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crossing over
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exhchange in genetic material between chromasomes in cells
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tetrads
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group of 4 chromatids formed by synapisis at the begining of meosis
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variation in species
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due to the genitic lottery
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karotype
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number and apperance of chromasomes in a eukaryotic cell
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homologous chromosome
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one chromosome from the mother, and one from the father
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nondisjunction in meiosis
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failure of chromosomes in meosis to separate, leading to a cell that is missing a chromosome and on that has an extra
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down syndrom
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caused by an extra 21st chromosome
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human diplid chromosome number
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46
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