Twins occur at approximately what frequency?

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Multiple Choice

Twins occur at approximately what frequency?

Explanation:
Twins occur in about one birth for every 80 to 90 births. This reflects the overall rate from both identical and fraternal twinning in the population, with fraternal twinning influenced by factors like maternal age, ethnicity, and fertility treatments, while identical twinning remains relatively constant around a low frequency. Because the typical population rate lands around 1 in 80–90, that makes this the best estimate. The other figures—about 1 in 40, 1 in 100, or 1 in 150—are farther from the usual range.

Twins occur in about one birth for every 80 to 90 births. This reflects the overall rate from both identical and fraternal twinning in the population, with fraternal twinning influenced by factors like maternal age, ethnicity, and fertility treatments, while identical twinning remains relatively constant around a low frequency. Because the typical population rate lands around 1 in 80–90, that makes this the best estimate. The other figures—about 1 in 40, 1 in 100, or 1 in 150—are farther from the usual range.

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