Question

Sex determination by environmental factor is commonly observed in :
a) Drosophila melanogaster
b) Mirabilis jalapa
c) Melandrium album
d) Bonellia viridis

Answer 1

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In Bonellia viridis, a marine worm, all the larvae are genetically and cytologically similar. If a particular larva settles near the proboscis of an adult of an adult female, it becomes a male individual. On the other hand, if it has to develop free in water, it becomes a female.

Answer 2

the correct answer is-
d) Bonellia viridis