Asked by: Akil Terceros
asked in category: General Last Updated: 16th April, 2020

What was the result of the studies done by Tyrone Hayes?

At a presentation to the U.S. National Institute of Environmental Health Sciences in 2007, Hayes presented results of his studies that showed chemical castration in frogs; individuals of both sexes had developed bisexual reproductive organs.

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Herein, what did Dr Hayes first study reveal about the effects of atrazine on frogs?

Prodded by the EPA, Syngenta approached Hayes, an expert on amphibian hormones, to find out if atrazine disrupts sex hormones in amphibians. He has developed several very sensitive assays to detect chemicals that affect hormones, including a test for estrogen-like chemicals that might induce human breast cancer.

Secondly, what does atrazine do to humans? Maternal exposure to atrazine in drinking water has been associated with low fetal weight and heart, urinary, and limb defects in humans. Atrazine has been shown to slow down the development of fetuses in animals, and exposure to high levels of atrazine during pregnancy caused reduced survival of fetuses.

Just so, who discovered atrazine?

Atrazine was invented in 1958 in the Geigy laboratories as the second of a series of 1,3,5-triazines. Atrazine is prepared from cyanuric chloride, which is treated sequentially with ethylamine and isopropyl amine.

Can male frogs turn into females?

Pesticide Turns Male Frogs into Females. The pesticide atrazine can turn male frogs into females that are able to mate and successfully reproduce. The larger animal on the bottom has been completely feminized by atrazine exposure and can produce viable eggs.

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