Science
In snails individuals can begin life as male and depending on environmental conditions they can become female as they grow. This is because
options
- Male snails have dominant genetic makeup.
- Female snails have dominant genetic makeup.
- Expression of sex chromosomes can change in a snail’s life time.
- Sex is not genetically determined in snails.
Genetics
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Answer
Sex is not genetically determined in snails.
Reason — In snails, sex determination depends on environmental conditions rather than fixed sex chromosomes. Many snail species are protandric hermaphrodites, meaning individuals start life as males and later develop female reproductive organs as they grow or when environmental factors—such as population density, temperature, or availability of mates—change.
This shows that the expression of sex is flexible and not genetically predetermined as in humans or other animals with distinct sex chromosomes.
Hence, the correct explanation is that sex is not genetically determined in snails.
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