Choanoflagellates could help explain a key step in animal evolution | Science News

[gijoge]

A signature characteristic of animal movement and morphogenesis are collective cell contractions that produce global tissue deformations. The origin of collective animal contractility, however, remains unclear. When surveying Curaçao's Caribbean Island for choanoflagellates, animals ' closest living relatives, researchers isolated a previously undescribed organism (C. flexa) that forms multicellular colonies in the shape of a cup. In response to changing light levels, the colonies rapidly invert their curvature, which they detect through a pathway of rhodopsin – cyclic guanosine monophosphate. Inversion requires apical contractility mediated by actomyosin and enables alternation between the action of feeding and swimming. C. flexa rapidly transforms sensory inputs into multicellular contractions. These findings may inform reconstructions of hypothesized ancestors of animals that existed before specialized sensory and contractile cells evolved.

Shared On DLIKE

---

Comments

[turbobro]

!sources

Steemit FAQ
The Complete Steemit Etiquette Guide (Revision 2.0) by @thecryptofiend

@steemflagrewards
@steemcleaners
@cheetah

Plag detected:

https://science.sciencemag.org/content/366/6463/326

Please do NOT use #neoxian tag anymore, Neoxian.City only accepts the ORIGINAL quality content.

[enforcer48]

Flagged for copy/paste.

_{@steemflagrewards}

[steemflagrewards]

Steem Flag Rewards mention comment has been approved for SFR Token Issuance!

Tokens will be transferrred when the flagged content reaches payout.

Thank you for reporting this abuse, @enforcer48.

• copy/paste
  Your post mostly contains copied material from a source or stock content and is not your original work.

This post was submitted via our Discord Community channel. Check us out on the following link!
SFR Discord

[gijoge]

Hi @steemflagrewards. Keep coming to my posts as always and be an obedient and loyal dog of @enforcer48. You are always welcome to do whatever they tell you. Those guys including @enforcer48 has to make a living out of you. Please help those poor beggars.

[anthonyadavisii]

Loyal dog of @enforcer48? Think you may be confused and wanted to make it clear so folks like you stop harassing my friend.

You can direct your BS complaints to me. I'll be sure to file them accordingly

[gijoge]

Okay Sir. Give me your official address. I will post it.

[gijoge]

Thanks for seeing my post. I did this post only for you my boy

[sources]

When posting content that either is owned by someone else or inspired by someone else’s works, it is proper to list the said source in your post with a link to the original.

Failing to do so is considered plagiarism, and could result in being blacklisted by curation groups or even flagged.

Examples include:

• Using another artist's original drawing/painting/digital art as a “study” or inspiration without linking the original and giving credit to the original artist.
• Linking to someone else’s YouTube video with no source.
• Using someone else’s photos or text without linking to the original source etc.

Please make sure you do so in the future, thank you.

If you understand the rules explained in this comment reply to this comment with "I understand"

[hoaithu]

Hello @gijoge

Thank you for following @haccolong account. As a follower of @haccolong this post has been randomly selected and upvoted by @hoaithu's Curation Trail.

To earn more rewards with your Steemit account. Check through some of the ways at this post.

I will continue with random upvotes in the future & wish you lots of luck. :)