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LESSON 15 MEIOSIS BIOL 1105 with 100- correct answers(graded A+).
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LESSON 15 MEIOSIS BIOL 1105 with 100- correct answers(graded A+).
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LESSON 15: MEIOSIS BIOL1105 with 100% correct
answers(graded A+)
meiosis - answer Cell division that produces reproductive cells in
sexually reproducing organisms
-produces gametes that are not identical to the parent (genetic
variability)
-sexual life cycle
-DNA replicates, followed by meiosis
-resulting cells are haploid
prophase 1 - answer -homologous chromosomes pair
-synapsis occurs
-crossing over occurs
-nuclear envelope breaks down
metaphase 1 - answer paired homologous chromosomes align on
metaphase plate
-independent assortment takes place
anaphase 1 - answer homologous chromosomes move to the
opposite poles of the cell
telophase 1 - answer -nuclear membrane reforms
-chromosomes start to decondense
, Cytokinesis 1 (meiosis) - answer Cytoplasm splits, resulting in 2
cells that must divide again
meiosis 1 - answer homologous chromosomes separate; sister
chromatids remain together
prophase II - answer -chromosomes condense
-new set of spindle fibers
-nuclear envelope
metaphase II - answer Chromosomes line up at the equator.
anaphase II - answer -centromeres divide
-chromatids move to the opposite poles of the cells
telophase II - answer -nuclear envelope reforms
-chromosomes decondense
cytokinesis II - answer -cytoplasm divides
-results in four daughter cells
meiosis II - answer -chromosomes align
-sister chromatids separate
-four haploid cells result
-each haploid cell contains half the original number of homologues
similarities of meiosis and mitosis - answer -both use a
microtubule-based spindle
-both segregate condensed DNA molecules to two daughter cells
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