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From: Bob Casanova <nospam@buzz.off>
Newsgroups: talk.origins
Subject: Re: The egg or the chicken
Date: Thu, 07 Nov 2024 16:04:31 -0700
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On Thu, 7 Nov 2024 14:41:23 -0600, the following appeared in
talk.origins, posted by RonO <rokimoto557@gmail.com>:

>On 11/7/2024 10:43 AM, Bob Casanova wrote:
>> On Thu, 7 Nov 2024 09:39:14 -0600, the following appeared in
>> talk.origins, posted by RonO <rokimoto557@gmail.com>:
>> 
>>> https://www.sciencedaily.com/releases/2024/11/241106132114.htm
>>>
>>> This news article claims that nature could create eggs long before it
>>> invented chickens.
>>>
>>> There is a single celled eukaryote (Chromosphaera perkensii) that
>>> branched off from animal cellular life forms a billion years ago before
>>> protists evolved.  It is a single celled organism that can form balls of
>>> two types of cells that look like early stage embryos, and it exists in
>>> these balls for about 1/3 of it's life cycle.
>>>
>>> The article claims that single celled animals could form embryo like
>>> cellular complexes long before multicellular life forms evolved, but the
>>> most their work indicates is that the genes that could be used to evolve
>>> multicellular life and future embryos may have existed that could allow
>>> the evolution of the convergent trait in two divergent lineages
>>> separated by half a billion years of evolution.  It branched off from
>>> the lineage that led to multicellular life a billion years ago and some
>>> time during it's evolution since splitting off it evolved the means to
>>> form these balls of cells.  A half a billion years after the divergence
>>> the lineage of multicellular animals evolved something similar.  For all
>>> we know the lineage of multicellular animals evolved embryos half a
>>> billion years ago, and the independent lineage of C. perkensii evolved
>>> their ability more recently, unless they have evidence that these embryo
>>> like structures existed a billion years ago.
>>>
>> You don't have to go that far back; even if we have no
>> fossilized eggs of fish or amphibians (due to the lack of
>> hard shells) we do have fossilized reptile and dino eggs,
>> which preceded chickens (or any other avians) by quite a few
>> million years. So I'd rate the article as "interesting, but
>> nothing really new regarding the old question".
>>>
>
>They are claiming that they have what preceded eggs.  This is before 
>sperm and egg produced embryos.
>
So the Subject:, "The egg or the chicken", which what my
comment was about, was just hype, and this all really had
nothing to do with either eggs (the standard sort) or
chickens? OK, but my comment was about "This news article
claims that nature could create eggs long before it invented
chickens.", a fact not in question.
>
-- 

Bob C.

"The most exciting phrase to hear in science,
 the one that heralds new discoveries, is not
 'Eureka!' but 'That's funny...'"

- Isaac Asimov