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First confirmed hatchings of two California condor chicks from unfertilized eggs

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21–30 of 104 posts

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#21

There's a perfectly logical, very probable, quite natural explanation, but the "researchers" claiming that their impossible, ridiculous, unfounded explanation can't possibly be wrong because..."muh politics"

Instead of posting a hyperbolic comment, how about you describe what the “perfectly logical, very probable, quite natural explanation” is.

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#23

So in birds, sex chromosome arrangement is a reverse of what we have in humans. Their males are ZZ and the female is ZW. Which is why only males appear from this parthenogenesis.

If the females are ZW, why can't they make WW or ZW?

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#24

So this is essentially Condors cloning themselves.

How does it work? I don't know how condors regulate their internal functions. As a human, I can control my muscles and my breathing, but I can't control, say, my digestion, my liver, my heart beat (except indirectly by either relaxing or doing stressful activities). How would a bird "flip the switch" and initiate asexual reproduction?

Lack of chemicals from the male to inhibit the process probably

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#25

Hmm, all birds are dinosaurs. It’s been a long time since I last saw Jurassic Park, but wasn’t something like this a plot line in the film?

The plotline there, as far as I remember, was that bullfrog DNA meant that some female dinosaurs could actually morph to become male and reproduce with the females (this is something that happens in some fish, amphibians, and even reptiles, where sex is not genetically determined).

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#26

There's a perfectly logical, very probable, quite natural explanation, but the "researchers" claiming that their impossible, ridiculous, unfounded explanation can't possibly be wrong because..."muh politics"

Is condor parthenogenesis a major political issue in the United States?

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#27

There's a perfectly logical, very probable, quite natural explanation, but the "researchers" claiming that their impossible, ridiculous, unfounded explanation can't possibly be wrong because..."muh politics"

I don't see anything political or absurd in this article, what do you mean?

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#28
post #17

So in birds, sex chromosome arrangement is a reverse of what we have in humans. Their males are ZZ and the female is ZW. Which is why only males appear from this parthenogenesis.

> Which is why only males appear from this parthenogenesis Could you explain the mechanism? If the female has both chromosomes, why couldn't it produce offspring with both?

The mostly likely path to parthenogenesis in a ZW female is making ZZ and WW offspring, and the WW is usually not viable.

https://en.wikipedia.org/wiki/Parthenogenesis#Sex_of_the_off...

Re: First confirmed hatchings of two California condor chicks from unfertilized eggs

#30
post #11
post #7

Quite the insult to the male condors. They were housed with the females, and but the females biologically opted for cloning themselves instead.

[Condorman] did poorly at the box office. Disney reportedly lost $9.5 million on the picture. The disappointing financial returns from Condorman, along with three other flop films, contributed to Disney's poor financial performance in 1981. https://en.wikipedia.org/wiki/Condorman

Aside for the title "Condorman", how is this movie relevant for the article we are discussing?
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