Competitive Exams: Cell Division Highlights in Biology

  • Prophase = longest

  • Anaphase = Shortest

  • Kappa particle – Paramecium (acidobacter taeniospiralis)

  • Sigma particle - Drosophila

  • Leptotene - Bouquet stage, Attachment plaque, beaded structure

  • Zygotene - Synapsis, zippering, Synaptonemal complex .chromonemeta (bivalent chromosome)

  • Pachytine - crossing over, recombination nodule, long lasting

  • Diplotene - terminalization, chromation decondes & RNA synthesis

  • Diakenesis - Chromosome end detach from nuclear membrane, chiasma formed.

  • Diagenic – father -> daughter -> grandson

  • Diacentric – mother -> son -> granddaughter

  • Hologeneic – Mother -> Daughter -> Grand Daughter

  • Holoandric – father -> son ->grandson

  • Metaxenia – effect of pollen on seed coat.

  • Xenia – effect of pollen on endosperm

  • Cell wall removed gm (positive) ->Protoplast

  • Cell wall removed gm(negative) -> Spheroblast

  • Chlorophyll Absorb red light –Carotene

  • Phaeoplast Absorb green light – Fucoxanthin

  • Rhodoplast Absorb blue light – phycoerythrin