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[personal profile] andrewducker

Date: 2009-07-08 11:22 am (UTC)
From: [identity profile] supergee.livejournal.com
Heather really has two mommies.

Date: 2009-07-08 08:48 pm (UTC)
From: [identity profile] heron61.livejournal.com
Indeed. That's both very cool and a joyously wonderful way of causing fundy's heads to explode.

Date: 2009-07-08 10:50 pm (UTC)
From: [identity profile] robhu.livejournal.com
I don't see how. A lesbian couple using sperm created in this method wouldn't really be 'two mommies' any more than a lesbian couple using sperm from a sperm bank.

The sperm the Newcastle team have 'created' is through persuading stem cells from a male embryo to differentiate in to sperm cells. That means that the initial cells that you get the sperm from are male.

It is extremely unlikely that female stem cells (assuming you could take stem cells from an adult person and do the same thing - which is very unlikely for a variety of reasons) could do the same thing because the Y chromosome almost certainly contains necessary information for differentiating in to sperm cells, and women lack the Y chromosome.

Date: 2009-07-08 11:31 pm (UTC)

Date: 2009-07-08 02:31 pm (UTC)
From: [identity profile] channelpenguin.livejournal.com
the sperm one looks a bit premature (ahem)- they haven't proven the ones they create really do work. And then they did it with mice the mice all died really young.

Date: 2009-07-08 05:35 pm (UTC)
From: [identity profile] kurosau.livejournal.com
I had an idea once upon a time that the Fermi paradox was the result of emissions control technology. At some point in the technological development of a species, they realize the need to control electromagnetic emissions, and so reorient their technology so that they aren't constantly broadcasting. And as a result, they go dark and very hard to find in the galaxy.

Date: 2009-07-08 10:06 pm (UTC)
From: [identity profile] kurosau.livejournal.com
Actually, I think it's also likely that they die out too quickly. Given the age of the universe, and the speed at which a culture could build itself up to that level and then subsequently destroy itself, there might be all sorts of spots in the timeline where we're alone. Or there is no other life in the universe, which would be telling in and of itself.

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