Scientists: Va. shark's pup a 'virgin birth'

Scientists: Va. shark's pup a 'virgin birth'
By STEVE SZKOTAK, Associated Press Writer
Fri Oct 10, 12:02 AM ET

RICHMOND, Va. - Scientists have confirmed the second case of a "virgin birth" in a shark.

In a study reported Friday in the Journal of Fish Biology, scientists said DNA testing proved that a pup carried by a female Atlantic blacktip shark in the Virginia Aquarium & Marine Science Center contained no genetic material from a male...

http://news.yahoo.com/s/ap/20081010/ap_ ... WS5XGs0NUE

The next thing you know it will pull a miracle. Say, it will eat a visitor through the aquarium glass.

The next thing you know it will pull a miracle. Say, it will eat a visitor through the aquarium glass.

"Candygram..."

The next thing you know it will pull a miracle. Say, it will eat a visitor through the aquarium glass.

Or swim in air. Or turn wine into water. Or create loaves of bread.

The next thing you know it will pull a miracle. Say, it will eat a visitor through the aquarium glass.

Or swim in air. Or turn wine into water. Or create loaves of bread.

I tried to avoid plagiarism [even if indirect] as much as possible.

There is a scientists here at WSU who has been cloning salmon for years, no male DNA involved. How is this different?

There is a scientists here at WSU who has been cloning salmon for years, no male DNA involved. How is this different?

The shark didn't have a lab, or, presumably, a degree (unless it was in law).

The next thing you know it will pull a miracle.

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Or swim in air.

Land Shark!

The next thing you know it will pull a miracle. Say, it will eat a visitor through the aquarium glass.

Or swim in air. Or turn wine into water. Or create loaves of bread.

Not crackers!


Are consecration fins!

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Or swim in air.

Land Shark!

You do not have the required permissions to view the files attached to this post.

The next thing you know it will pull a miracle. Say, it will eat a visitor through the aquarium glass.

Or swim in air. Or turn wine into water. Or create loaves of bread.

Or run for POTUS.

Well, I'm glad to see that my modest prodding re miracles was ably picked up and taken to the new heights. A tad more creativity, though, would not have hurt.

There is a scientists here at WSU who has been cloning salmon for years, no male DNA involved. How is this different?

The shark didn't have a lab, or, presumably, a degree (unless it was in law).

In this case, the daughter wasn't a clone of the mother. Somehow, the egg (haploid) duplicated its chromosomes to become diploid. I tried to figure that out last week and stumbled on it in a news article of some kind, but I didn't bookmark it. I did find an article that said this:

The testing showed the female pup's DNA matched only one female who lived in the tank, and that no male DNA was present in the pup. The pup was not a twin or clone of her mother, but rather, contained only half of her mother's DNA ("automictic parthenogenesis").

"Life will find a way."

Feminazi Fish.

In this case, the daughter wasn't a clone of the mother. Somehow, the egg (haploid) duplicated its chromosomes to become diploid.

It looks like this can happen in human ovaries sometimes, but the result is a teratoma (a tumor containing tissues from more than one embryonic tissue layer). This may be due to mammalian genomic imprinting, patterns of methylation of DNA set during gamete production. In embryogenesis paternal DNA controls the development of the placenta and related tissues, while maternal DNA runs early embryonic development. If only maternal DNA is present you get a teratoma (production of abnormal embryonic tissues), and if only paternal DNA is present you get a hydatidiform mole, or molar pregnancy (production of abnormal chorionic villi).