Ask yourself why a cell turns into a heart muscle cell while another turns into a brain cell?
Ask yourself why you continue to reject science. Ask yourself while every single living scientist, PhD, and high school dropout understands that XX or XY chromosomes determines gender, while you deny it.
Ask yourself why you insist on embarrassing yourself.
You really do not know any science and have not asked any one who does know science.
Here is an example that proves you wrong once again.
Pesticide atrazine can turn male frogs into females
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Pesticide atrazine can turn male frogs into females
By
Robert Sanders, Media relations | MARCH 1, 2010
Atrazine, one of the world’s most widely used pesticides, wreaks havoc with the sex lives of adult male frogs, emasculating three-quarters of them and turning one in 10 into females, according to a new study by University of California, Berkeley, biologists.
The 75 percent that are chemically castrated are essentially “dead” because of their inability to reproduce in the wild, reports UC Berkeley’s Tyrone B. Hayes, professor of integrative biology.
“These male frogs are missing testosterone and all the things that testosterone controls, including sperm. So their fertility is as low as 10 percent in some cases, and that is only if we isolate those animals and pair them with females,” he said. “In an environment where they are competing with unexposed animals, they have zero chance of reproducing.”
The 10 percent or more that turn from males into females – something not known to occur under natural conditions in amphibians – can successfully mate with male frogs but, because these females are genetically male, all their offspring are male.
“When we grow these guys up, depending on the family, we will get anywhere from 10 to 50 percent females,” Hayes said. “In a population, the genetically male females can decrease or wipe out a population just because they skew sex ratios so badly.”
Though the experiments were performed on a common laboratory frog, the African clawed frog (
Xenopus laevis), field studies indicate that atrazine, a potent endocrine disruptor, similarly affects frogs in the wild, and could possibly be one of the causes of amphibian declines around the globe, Hayes said.
Hayes and his UC Berkeley colleagues report their results in this week’s online early edition of the journal
Proceedings of the National Academy of Sciences. In last week’s issue of the
Journal of Experimental Biology, Hayes and colleagues published a review of the possible causes of a worldwide decline in amphibian populations, concluding that atrazine and other hormone-disrupting pollutants are a likely contributor because they affect recruitment of new individuals and make amphibians more susceptible to disease.
“These kinds of problems, like sex-reversing animals skewing sex ratios, are much more dangerous than any chemical that would kill off a population of frogs,” he said. “In exposed populations, it looks like there are frogs breeding but, in fact, the population is being very slowly degraded by the introduction of these altered animals.”
Some 80 million pounds of the herbicide atrazine are applied annually in the United States on corn and sorghum to control weeds and increase crop yield, but such widespread use also makes atrazine the most common pesticide contaminant of ground and surface water, according to various studies.
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This also happens to higher order organisms, including humans.
DNA is NOT at all final. All DNA does is transcribe certain hormones, but if other contrary hormones are present in sufficient quantity, then the fetal development will be contrary to what the DNA itself would have caused.
