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30 Cards in this Set
- Front
- Back
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mitosis?
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cell division
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meosis?
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productiion of sex cells
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cell division is neccessary 4?
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1. growth/development
2. repalcement of dead/worn out/damaged tissue. 3. reproduction |
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cells that cant divide
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red blood cells, muscles, nerve, liver
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DNA
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hereditary material
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chromosome
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DNA and its associated proteins condenses
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chromatid
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one of 2 attached copies of a chromosome
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centromere
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area of chromatid-attachment
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kenetic chore
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area around centromere; spindle attachment
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diploid
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full set of chromosomes; chromosomes exist in pairs
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haploid
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half the original # of chromosomes, exist individually
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somatic cells
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diploid cells that make up most organs & tissue of the body will undergo mitosis
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germ cells
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diploid cells that are boated in gonads; will undergo meiosis 2 produce haploid sex cells
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gonads
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location of germ cells(testies/ovaries)
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how do we maintain chromsomal numbers in sexual reproduction?
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Meiosis
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mitosis equation
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2n->2n
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Meiosis equation
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2n->n
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fertilization equation
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n->2n
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gametes
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haploid cells produced from meiosis from germ cells
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homologues
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matching chromosomes
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ganetogenesis
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production of gametes
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spermatogenesis
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production of sperm
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oogenesis
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production of oocytes(eggs)
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dyad
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replicated chromosome
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tetrad
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pair of replicated homologues
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meiosis I
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1. homologues pair
2. homologues separate* prophase I metaphase I anaphase I telophase I |
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meiosis II
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sister chromatids separate
prophase II metaphase II anaphase II telophase II |
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interphase I
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-cell growth
-DNA synthesis |
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prophase I
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-nucleus disappears
-chromosome condenses -homologues pair |
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metaphase I
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-chromosomes line up
-spindles appear |
