Question

Chromosomes control sex determination but it is not a characteristic of

• A. Human
• B. $Drosophila$
• C. $Bonellia$
• D. Grasshopper

Answer 1

The correct option is C $Bonellia$

Sex determination in Bonellia is controlled by the presence or absence of bonellin i.e. environmental factors. If larva develops free in water it becomes adult female. The larva that are exposed to bonellin in the skin of an adult female develop into males. Hence, option C is correct answer.