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Question

Which of the following is unique to mitosis and not a part of meiosis?
  1. Homologous chromosomes behave independently
  2. Chromatids are separated during anaphase
  3. Homologous chromosomes pair and form bivalents
  4. Homologous chromosomes crossover


Solution

The correct option is A Homologous chromosomes behave independently

During mitosis, all the chromosomes behave independently while during meiosis, homologous chromosomes pair up through synapsis and form bivalents in zygote substage of prophase – I, then in pachytene substage, crossing over occurs between homologous chromosomes and during diplotene substage of prophase-I of meiosis chiasma formation takes place. During anaphase of both meiosis and mitosis, chromatids are separated and pulled towards opposite poles.

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