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AMU Medical AMU Solved Paper-1999

  • question_answer
    The phenomenon of sexual reproduction in zygomycetes, dependent upon the successful mating between\[+\]and\[-\]strains, is called

    A)  heterothallism    

    B)  heterosis

    C)  heterospory      

    D)  heterogamy.

    Correct Answer: A

    Solution :

    : Heterothallism is the condition of having separate, physiologically different, male and female thalli (in algae and fungi), i.e., sexual reproduction takes blace between two oppositely strained (\[+\]and\[-\]) hyphae. Heterothalism was discovered by Blakeslee in 1904 in mucorales - Rhizopus (zygomycetes).


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