Bisexual Chickens?

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A half-male, half-female chicken. From the Roslin Institute at the University of Edinburgh.

Why did the chicken cross…dress? Sounds like a joke, but it’s somewhat legit: Researchers have determined that poultry that appear to be half-male, half-female are genetically that: male-female “chimeras.”

In mammals, an embryo's sex is determined when a genetic switch starts the development of “male” or “female” gonads. The gonads then release hormones that instruct other cells to develop as a certain sex. This process was generally assumed to apply to all vertebrates, but a new study appearing today in the journal Nature shows that, at least in chickens, gonads alone don’t determine sex; cells across the body also play a role. In chicken chimeras, "nearly every cell...from wattle to toe—has an inherent sex identity,” writes Janet Fang in a news article on the study.

Chimeric chickens have white feathers and large wattles and breast muscles on the “manly” side, and darker coloring on the “lady” side. The process leading to their yin-yang patterns probably applies to other species of birds, writes Fang, but such male-female individuals (also called gynandromorph) aren’t noticed as much “because differences between the sexes aren't as pronounced.”

The study “means we must now reassess how this developmental process occurs in other organisms,” said the lead author, Michael Clinton, in a press release. “There is already some evidence that organs such as the heart and brain are intrinsically different in males and females, and birds may provide a model for understanding the molecular basis for these gender differences." As long as future research doesn't show that women are genetically predisposed to be in the kitchen cooking the chicken, full steam ahead.

Not

Intersex, not bisexual.

No

Um. It sounds like you are confusing bisexual with transgendered.

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Your reply is hilarious :)

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This wont hurt people eating

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Well it can be true or maybe not. But the article seems well researched. pewter ornaments

definition

Well, the first definition that Merriam Webster's Collegiate Dictionary offers for "bisexual" is: possessing characters of both sexes. The second definition is: of, relating to, or involving both sexes.

This said, the title of my post was not intended to characterize chimera chickens definitively as "bisexual," but simply to probe at the idea--hence the question mark.

Julie

what year was the

what year was the publication of the dictionary... was it before or after 1990? The term "bisexual" actually originally was intended for plants, not animals, nor people. In current usage it can refer to plants, or sexual orientation. A funny thing when you have an ever changing "living language" such as English.

Wrong word

Um, this should say intersexed chickens, not bisexual. Sounds like you need a dictionary...

I do not think that chicken

I do not think that chicken is bisexual. These two genera, not bisexual. All bisexual men and women walking by not having male and female genitalia!
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uggg

THIS is the result of NOT enough good science teachers. Ms. Leibach is correct. She meant what she wrote. The rest of you need to go back to school... at least start watching the science channel.

That's a good thing. As

That's a good thing. As Borland noted, the oldtime way of harvesting wild pecans "now seems unbelievable. Nut-gatherers went through the woods, chose the largest, heaviest-bearing pecan trees, and when the nuts were ripe they cut them down. Then they put boys to work picking the nuts from the fallen giants. Not until those magnificent pecan trees became scarce did they cease cutting them and begin grafting and planting new trees that are grown in orchards like oranges."
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While I have no idea if

While I have no idea if modern farming practices, including feed ration components, have impacted the birds in this study, I will say that there is plenty of interesting research regarding poultry sexuality documented in historic poultry texts. During the early part of the 1900's there were many Agricultural Experiment Stations. Much of the most useful information derived at these stations was documented in Morley Jull's two books: Poultry Breeding, and Poultry Husbandry.

There were cases of chickens changing sex, then changing sex back again – even producing offspring (though I believe that was limited to one phase). There were also cases of unfertilzed turkey hens producing fertile eggs.

It might be well to look back at old research before we draw any solid conclusions.
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Then they put boys to work

Then they put boys to work picking the nuts from the fallen giants. Not until those magnificent pecan trees became last minute scarce did they cease cutting them and begin grafting and planting new trees that are grown in orchards like oranges.

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thanks for posting the

thanks for posting the article, very interesting, i didn´t know this is possible.

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Wonderful.

I have another question why they are so tasty and we like eating them, instead of having this birds as our pets.
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I think you mean intersexed

I think you mean intersexed chickens? But anyway this is interesting, thanks for the story.
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That's a good thing. As

That's a good thing. As Borland noted, the oldtime way of harvesting wild pecans "now seems unbelievable. Nut-gatherers went through the woods, chose the largest, heaviest-bearing pecan trees, and when the nuts were ripe they cut them down. Then they put boys to work picking the nuts from the fallen giants. Not until those magnificent pecan trees became scarce did they cease cutting them and begin grafting and planting new trees that are grown in orchards like oranges."

I like it

I like the entire article, and its very new experience for me to read and I ask my friend to read this article atleast once.

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“There is already some

“There is already some evidence that organs such as the heart and brain are intrinsically different in males and females, and birds may provide a model for understanding the molecular basis for these gender differences." - It is really an interesting scientific analysis. It is hoped that the study on these birds may lead the scientific community to discover more and more important facts which will be a great help for solving critical medical and scientific issues.link building service

Bisexual or not they still

Bisexual or not they still taste the same :)
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What a weird chicken?

What a weird chicken? bisexual?
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I do not think chickens are bisexal. Only time will tell!

Bisexual?

I do not think that chicken is bi sexual. It is both genders, not bisexual. All those bisexual men and women walking around don't have both male and female genitalia!

A

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wrong word

I think that it's not a right word for chicken .. it's intersex not bisexual !.
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I do not think that chicken

I do not think that chicken is bi sexual. It is both genders, not bisexual. All those bisexual men and women walking around don't have both male and female genitalia!

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I have never heard of

I have never heard of chickens like this before. They can be half male and female. I wonder why they are like this. There needs to be more research on this.
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It is great learning this

It is great learning this interesting information that poultry that appear to be half-male, half-female are genetically that: male-female “chimeras.” Thanks for the nice discussion. Laguna Beach Homes

COMMENT

There is already some evidence that organs such as the heart and brain are intrinsically different in males and females.

It seems that you have

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There is already some

There is already some evidence that organs such as the heart and brain are intrinsically different in males and females.
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I don't think that this is

I don't think that this is an evidence it is just some kind of spoiled chicken. For example sex toys are also something for not natural satisfaction. All these depend on people.

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"LOL" Thank you for the very

"LOL" Thank you for the very funny news :-)
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The rules, regulations and

The rules, regulations and benefits of keeping chickens (Chooks) and others ... Or that the breeder would be using less and possibly a chook bisexual?
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My view

You put the all great things which makes all people getting interested. but yes that is right, i agree. all you mention is make a sense. Thanks
I have not any word to appreciate this post.Really i am impressed from this post. Thanks.

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It is really an interesting scientific analysis. It is hoped that the study on these birds may lead the scientific community to discover more and more important facts ,thanks...............

Interesting

Interesting article! I didn't really have a clue about this. Internet can definitely improve your knowledge on so many subjects:)
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this is a great discovery

I'm completely surprised. Even now, we keep finding new things and old theories keep getting debunked. So its just lot more than just falling in love and making eggs that are male or felame with gonads. All the cells actually make a difference? That's news to me!

Bisexual chickens

I am not surprised to see the genetically modified chickens as we are already seeing genetically modified animals. Its a little bit odd but humans will be next they reckon.

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Thank u so much sincerely

Thank u so much sincerely for sharing your wonderful experiences with all of us.i am impressive by this chicken.

Thanks for this article

This post is absolutely fantastic!I enjoyed reading your article.This is truely a great read for me and m looking forward to reading more articles. I like the photo;-)

What a crazy discovery!

What a crazy discovery!