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Question

Male produce sperms by mitosis in _______________.

A
Periplaneta americana
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B
Apis mellifera
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C
Drosophila melanogaster
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D
Lepisma
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Solution

The correct option is B Apis mellifera
In organisms which have haploid males (such as honeybees, Apis mellifera), there is a variation of meiosis during spermatogenesis. The meiosis-I is abortive i.e. the chromosomal events such as crossover and separation of homologous chromosomes, do not happen. However, some cytological changes do happen which is described by Sharma et al (1961) as "simulation of the normal meiosis I". This is followed by meiosis II (which is mechanistically same as mitosis). So, basically there is no halving of the number of chromosomes and the gametes are also haploid.

So, the correct answer is 'Apis mellifera'.

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