During the second trimester, when can the sex of the fetus typically be determined?

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Multiple Choice

During the second trimester, when can the sex of the fetus typically be determined?

Explanation:
During the second trimester, the sex of the fetus is typically determined during the standard anatomy ultrasound, usually performed around 18–20 weeks. By this point, the external genitalia are developed enough to be distinguished clearly on ultrasound, allowing clinicians to identify whether the fetus is male or female with good accuracy. Earlier in the first trimester, the genitalia are not yet clearly visible, so sex determination is not reliably possible. Later in the third trimester, sex can still be identified if the anatomy is visible, but the routine window for reliable determination is mid-pregnancy. Postnatal would be after birth.

During the second trimester, the sex of the fetus is typically determined during the standard anatomy ultrasound, usually performed around 18–20 weeks. By this point, the external genitalia are developed enough to be distinguished clearly on ultrasound, allowing clinicians to identify whether the fetus is male or female with good accuracy. Earlier in the first trimester, the genitalia are not yet clearly visible, so sex determination is not reliably possible. Later in the third trimester, sex can still be identified if the anatomy is visible, but the routine window for reliable determination is mid-pregnancy. Postnatal would be after birth.

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