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Increase Page Rank for Blogger in No Time !

External links - Jquery You want to Increase Page Rank for Blogger or your site in no time ? Ok ,perfect ! All those what you have found from tips and tricks about SEO and Ranking may work ,but have you came across the tips which I found ?

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What is Twitter ,how to use it and what for ?

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External links - Jquery Want to get rid of the blogger toolbar in new blogger that just came out of beta ? If you have shifted your blogspot blog from old blogger to the new blogger beta, you may have noticed that the previous CSS code to remove the blogger navbar will no longer be effective. That's because Google now uses different CSS tags to display the blogger bar. [#navbar-iframe instead of #b-navbar] If you want to hide the navbar in your blogger blog, here's what you should do ! (these instructions refer to the "new" Blogger layouts templates) GO GET IT GUMGUM:)

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Thumbnail image that says sleek button using photoshop that links to a Photoshop tutoril. Looking for professional Social Bookmark Buttons for your blog ! me too :) however, while i was searching the net too, I came across a post by Naeemnur, that had instructions for Blogger (BlogSpot.com) based blogs which was really good.If you have a blog on blogger you can definitely give this a try.

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Senin, 04 April 2011

Ternyata Ayam Bisa Berganti Kelamin Secara Alami

Siapa bilang pergantian kelamin hanya bisa terjadi pada manusia? Ayam milik pasangan suami istri Jim dan Jeanette Howard yang berasal dari Huntington, Inggris mengalami pergantian kelamin dari betina ke jantan.

http://stat.k.kidsklik.com/data/photo/2011/04/01/1455238620X310.jpg

Ayam piaraan bernama Gertie itu mulai mondar-mandir di halaman rumah dan berkokok layaknya pejantan. Beberapa minggu kemudian, karakter pejantan mulai tumbuh, seperti pial di dagu, jengger di kepala, serta bulu coklat gelap khas pejantan.

Jim Howard mengatakan pada Cambridge News, "Saya tahu ini kedengarannya aneh, tapi saya bisa memastikan ini semua benar. Orang pikir ini hal yang konyol, tapi ternyata ini adalah benar adanya."

Publikasi Institut Ilmu Pangan dan Pertanian Universitas Florida tahun 2000 menyatakan, "Perubahan kelamin nyatanya terjadi, meski tak begitu sering. Namun hingga sekarang, belum dijumpai perubahan dari jantan ke betina."

Perubahan kelamin ini bisa dijelaskan dari perkembangan biologis ayam. Pada masa embrionik, terdapat bakal kelamin jantan dan betina. Sekali gen betina dominan, maka ovarium akan berkembang.

Tapi tak seperti manusia, ovarium ayam hanya berkembang di pinggang kiri saja. Sementara, bakal kelamin di pinggang kanan akan mengalami dormansi, tak berkembang menjadi jantan maupun betina. Bagian yang mengalami dormansi disebut ovotestis.

Dalam kondisi tertentu seperti adanya kista, tumor ataupun penyakit kelenjar anak ginjal, ovarium ayam bisa mengalami degenerasi. Saat itulah, ovotestis mungkin tumbuh menjadi organ kelamin jantan.

"Jika bakal kelamin di sebelah kanan berkembang jadi testis, maka akan mensekresikan androgen," kata Mike Hulet, profesor ilmu peternakan di Pennsylvania State University. Androgen adalah hormon yang bertanggung jawab terhadap karakteristik jantan.

"Produksi androgen inilah yang akan menyebabkan perubahan perilaku pada betina dan membuatnya bertingkah layaknya pejantan," ucap Hulet seperti dikutip Life's Little Mysteries.

Namun, ayam tak akan sepenuhnya menjadi jantan. Meski tampak jantan, secara genetik ayam seperti Gertier tetap betina. Jadi, meski tak akan mampu bertelur lagi, ayam yang berganti kelamin juga takkan mampu membuahi betina lain. Akibat pergantian kelamin, Gerte kini berganti nama menjadi Bertie.

Sumber :
sains.kompas.com

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