External sex characteristics become clearly visible around the _____ week of gestation?

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Question restatement: External sex characteristics become clearly visible around the _____ week of gestation?
Option 1: 24th. This would be later in gestation; external genitalia typically become recognizable earlier, not at 24 weeks, so this is not correct.
Option 2: 12th. This is the point in early fetal development when external sex characteristics begin to be distinguishable, making this the correct choice based on typical developmental timelines.
Option 3: 31st. At around 31 weeks, fetal development is far along and while features are more defined, the specific visibility of external sex characteristics is not the standard reference point at this stage, so this is not the standard answer.
Option 4: 1st. One week after fertilization does not correspond to gestational weeks, and external sex characteristics are not visible this early; this makes the option incorrect.
In summary, the commonly taught developmental milestone for external genitalia becoming clearly visible is around the 12th week of gestation, whereas the other options correspond to either much later development or an inaccurate early point.

PSYC-312-02 Midterm 1- Requires Respondus LockDown Browser

External sex characteristics become clearly visible around the _____ week of gestation?

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