Quietly, Animal Cloning Speeds Onward

By Kris Axtman writer of The Christian Science Monitor | The Christian Science Monitor, October 15, 2001 | Go to article overview

Quietly, Animal Cloning Speeds Onward


Kris Axtman writer of The Christian Science Monitor, The Christian Science Monitor


They are Big Bertha and Tiny Tina, a couple of piglets.

They may look and act differently (hence, their names), but these oinkers are identical. They are the newest cloned animals from Texas A&M University, which - with their births - leads the academic pack in the number of species cloned. And the fact that animals with the exact same genes can be different sizes and have different character traits may be just the first of many things that scientists hope can be learned from these little pigs.

This latest cloning project - and the wealth of information scientists hope it will provide - is just one of the many such animal-cloning experiments under way. Even as the human-cloning debate has dominated headlines and congressional hearings, scientists have cloned everything from mice to lambs to bulls.

And it is in the pens of these cloned animals - rather than the theoretical realm - where both the advances and problems of cloning are being played out.

After the 1996 birth of Dolly the sheep, the first cloned animal, the technology has been galloping along. There are now cows and goats that produce more milk and tastier meat, bulls able to resist disease, and pigs that can act as organ donors.

And this is only the beginning, say cloning supporters. For instance, breeding disease-resistant cows could save people's lives in third-world countries. And by cloning endangered species, animals such as the Atwater prairie chicken and desert bighorn sheep could be saved from extinction.

"You could repopulate the world [with an endangered species] in a matter of a couple of years," says H. Richard Adams, dean of Texas A&M's College of Veterinary Medicine. "Cloning is not a trivial pursuit.... We're trying to improve life for people here on earth."

Dr. Adams is quick to defend his school's program and to dismiss cloning's sensational aspects.

The school has come under criticism for its "Missyplicity" project, in which the owners of a dog are spending $3.7 million to have the pet cloned.

In addition to such moral controversies, opponents say there are still too many physical problems associated with animal cloning, such as deformities and high death rates during gestation. A recent article published in the journal Science, for instance, noted that researchers have found that apparently normal cloned animals develop abnormalities later in life.

But so far, so good with the health of Second Chance, a 1,000- pound Brahma bull born in Texas in June of 1998. He is being carefully watched because his donor, Chance, at the age of 21, was the oldest animal ever cloned.

The owners, Ralph and Sandra Fisher, had a special attachment to Chance, a favorite with kids at rodeos and county fairs and who appeared in several movies.

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