1.

What are the various races of Bombyx mori?

Answer»

On the basis of the moults they undergo in the larval stage, B. mori is divided into three races. 

They are:

1. Tri moulters – 3 moults 

2. Tetra moulters – 4 moults 

3. Penta moulters – 5 moults

  • On the basis of voltinism (the number of broods raised per year), three kinds of races are recognised. They are:
  • Univoltines – one brood only
  • Bivoltines – two broods only
  • Multivoltines – more than two broods


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