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  1. J

    Why do i feel this way after no sex for 6 months?

    yea your body is not use to having sex so it is like losing your virginity again
  2. J

    true or false questions biology?

    while paired together during the second division of meiosis, two chromosomes may exchange segments of DNA
  3. J

    more true and false biology questions?

    1)crossing-over is the exchange of reciprocal segment of NA between homologous chromosomes 2)meiosis produces four nuclei that have a different chromosomes number from the original segments
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