In which organism is sex not determined genetically?

Correct option is C

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The correct answer is (c) Snail.

·         In snails, sex determination is not solely dependent on genetic factors.

·         Many snails, particularly certain species of gastropods, are hermaphroditic, meaning they have both male and female reproductive organs.

·         This allows them to change their reproductive role depending on environmental conditions, rather than through fixed genetic sex determination.

·         Environmental factors like population density, temperature, and social interactions can influence their reproductive roles.

·         In other organisms, like mammals and birds, sex is determined genetically, either by chromosomes (like XX/XY in humans) or other genetic mechanisms.

·         Snail reproduction can vary widely, showcasing diversity in reproductive strategies across species.

·         Environmental sex determination is also found in some reptiles, like certain turtles and crocodiles, where temperature plays a role.

Additional Knowledge:

·         Sparrow: Sex is determined genetically in sparrows, with ZZ (male) and ZW (female) chromosomes.

·         Butterfly: Sex determination is genetic in butterflies, with males being ZZ and females being ZW.

·         Moth: Similar to butterflies, moths also have genetic sex determination, with a ZW system in females and ZZ in males.