There is no centromeric division during anaphase I. Division of the centromeres take place during anaphase. The chromosomes of daughter cells usually contain a mixture of maternal and paternal genes. The genetic constitution of the daughter cells differs from that of the parent cell. Two chromatids of a chromosome (Progeny cells) are often genetically different due to crossing over. The genetic constitution of the daughter cells is identical to that of the parent cells. Two chromatids of a chromosome (Progeny cells) are genetically similar. The metaphase plate is made up of paired chromosome pairs. The metaphase plate is made up of chromosome pairs. In metaphase I the centromeres are lined up in two planes which are parallel to one other. Chiasmata are absent.Ĭhiasmata or visible connections between homologous chromosomes of bivalents are observed during diplotene, diakinesis (prophase I) and metaphase I In the metaphase plate all the centromeres line up in same plate. Crossing over is absent.Ĭrossing over or exchange of similar segments between nonsister chromatids of homologous chromosomes usually take place during pachytene stage. Synapsed homologous chromosome develop a synaptonemal complex. No bouquet stage is recorded.Ĭhromosomes of animals and some plants show covergence towards one side during early prophase I. Chromosomes are already duplicated at the beginning of prophase When prophase I commences the chromosomes appear single, (although DNA replication has taken place in interphase I). The arms of the chromatids are separated widely in prophase II. The arms of the prophase chromatids are close to one another. Chromatids of two homologous chromosomes exchange segments during crossing over. The two chromatids of a chromosome do not exchange segments during prophase. Synapsis of homologous chromosomes takesplace during prophase. There are two cell divisions but the chromosomes divide only once. The cell divides only once and the chromosomes also divide only once. Prophase is complicated and divided into leptotene, zygotene, pachytene, diplotene, and diakinesis. Prophase is comparatively longer and may take days. The DNA replicates once for two cell divisions The duration of prophase is short, usually of a few hours. DNA replication takes place during interphase I but not interphase II The DNA replicates once for one cell division. DNA replication takes place during interphase I. Interphase occurs prior to each division. There are two cell divisions, the first and the second meiotic divisions. Occurs only in sexually reproducing organisms. Occurs in both sexually as well as asexually reproducing organisms. Take place in the somatic cells of the body. "Difference between Mitosis and Meiosis (32 Differences)". It does not help in multiplication of cells After first division second division starts which is similar to mitosis.ġ6.Chromosome number reduces in meiosis, from diploid to haploid.ġ7. At the end of first division or reduction division two daughter cells are not formed.ġ5. Nucleoli does not reappear in telophase I.ġ4. Spindle fibres does not completely disappear during telophase I.ġ3. No division of centro mere during anaphase I but only during anaphase II.ġ2. In meta phase I chromosomes arrange two planes which are parallel two one another.ġ1. Chiasmata is seen throughout pro phase I and meta phase I.ġ0. Synapsed chromosomes develop synaptonemal complex.ĩ. Chromatids of homologous chromosomes exchange segments during crossing over.ħ.chromosomes are bivalent or tetrads having two chromatids held by two centro mere.Ĩ. Homologous chromosomes undergo synapses.Ħ. Prophase is divided into leptotene,zygotene,pachytene,diplotene and diakinesis.ĥ.
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