Metaphase I: The tetrads of chromosomes are lined up on the equator of the cell with the spindle apparatus having already been completely formed. It is during prophase I and metaphase I where genetic recombination occurs.
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B Presence of an atmosphere and a rock surface composition
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decomposers si the light answer
The type of organism/agent is specific n terms of mechanism of causing infection as well as the symptoms being produced. Knowing the agent/organism allows the identification of a particular treatment which will be effective against that particular organism, and will not harm the good microbes present inside the body.