Meiosis
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Gametes- | reproductive cells
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| Haploid- | single set of chromosomes in gamete cells produced by ovaries and testies
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| Diploid cell- | cell formed by egg and sperm coming together, single cell
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| Zygote- | fertilized egg
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| Somatic cells- | diploid, 46 chromosomes, 23 from each parent
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| Autosomes- | a chromosome not directly involved in determining sex
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| Sex chromosomes- | determines sex of a child
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| Homologous chromosome- | two chromosomes of pair with the same length, centromere position, and staining pattern
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| Karyotype- | a pair of homologous replicated chromosomes
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| Meiosis 1- | separates homologous chromosomes
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| Prophase 1- | spindle forms, chromosomes condense, nuclear envelope breaks down
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| Metaphase 1- | pairs of chromosome arrange in a line
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| Anaphase 1- | homologous chromosomes separate and head towards poles
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| Telophase 1 and cytokinesis- | two haploid cells form, each chromosome still has two sister chromatids
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| Meiosis 2- | sister chromatids separate
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| Prophase 2- | spindle forms, chromosomes begin to drift toward metaphase plate
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| Metaphase 2- | chromosomes position in a line, crossing over causes these chromosomes to be genetically different
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| Anaphase 2- | sister chromatids split, moving as individual chromosomes towards poles
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| Telophase 2 and cytokinesis- | nuclei form, chromosomes condense, four genetically different
daughter cells form
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| Crossing over- | occurs in metaphase 2, causes chromosomes to be genetically different
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| Random fertilization- | a way of genetic variation by the sperm randomly selecting egg cells
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| Independent assortment- | random grouping together of chromosomes at metaphase 1 that causes genetic variance
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Created by:
mr_spangler
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