| 1. | This duct is known as the pronephric duct, mesonephric duct or Wolffian duct.
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| 2. | This part of the frog is called the mesonephric duct.
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| 3. | Without testosterone and AMH, the mesonephric ducts degenerate and disappear.
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| 4. | These are the mesonephric ducts and paramesonephric ducts.
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| 5. | In the female the mesonephric ducts regresses, causing the trigone to be less prominent, but still present.
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| 6. | Testosterone converts the mesonephric ducts into male accessory structures, including the epididymis, vas deferens, and seminal vesicle.
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| 7. | They degenerate in males of certain species, but the adjoining mesonephric ducts develop into male reproductive organs.
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| 8. | In females, the mesonephric ducts regress.
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| 9. | The paramesonephric ducts and the mesonephric ducts share a majority of the same mesenchyme due to Hox gene expression.
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| 10. | This vesicle then elongates to form the " mesonephric tubule ", attaching to the mesonephric duct on one side.
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