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In a mitotic cycle, the correct sequence of phases is
Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A): The beginning of diplotene is recognised by the dissolution of the synaptonemal complex and formation of X shaped structures called chiasmata. Reason (R): In oocytes of some vertebrates, diplotene can last for months or years.
Which one of the following never occurs during mitotic cell division?
Identify the correct statement with regard to G1 phase (Gap 1):
Select the correct sequence of events occurring during Prophase-I of Meiosis-I: (a) Synapsis of homologous chromosomes (b) Crossing over between non-sister chromatids (c) Condensation of chromatin (d) Dissolution of the synaptonemal complex (e) Terminalisation of chiasmata
Among eukaryotes, replication of DNA takes place in:
Archegoniophore is present in:
Given below is the diagram of a bacteriophage. In which one of the options, all the four parts A, B, C and D are correct?
Chrysophytes, euglenoids, dinoflagellates and slime moulds are included in the kingdom:
Which of the following statements is wrong for viroids?
Cell wall is absent in:
Which one of the following sets of items are correctly categorised with one exception in it? | | Items | Category | Exception | | :--- | :--- | :--- | :--- | | (a) | Kangaroo, Koala, Wombat | Australian Marsupials | Wombat | | (b) | Plasmodium, Cuscuta, Trypanosoma | Protozoan parasites | Cuscuta | | (c) | Typhoid, Pneumonia, Diphtheria | Bacterial diseases | Diphtheria | | (d) | UAA, UAG, UGA | Stop codons | UAG |
Infectious proteins are present in:
After karyogamy followed by meiosis, spores are produced exogenously in?
Viroids differ from viruses in having;
Which one of the following is wrong for fungi?
The primitive prokaryotes responsible for the production of biogas from the dung of ruminant animals include the:
Methanogens belong to:
Choose the wrong statement:
One of the major compounds of the cell wall of most fungi is?