"Simple Yet Elegant" Design in Fruit Flies | The Institute for Creation Research
"Simple Yet Elegant" Design in Fruit Flies
Graduate student Shiuan-Tze Wu led a study of some ingenious organization into the odor-sensing cells of fruit flies. He and his collaborators at the La Jolla campus of UC San Diego found that the odor-detector cells in the insects’ antennae talk to one another in a way that saves brainpower. It’s all so impressive that the senior author of the report called it “simple yet elegant,” according to the UC San Diego News Center.1

The team published in the Proceedings of the National Academy of Sciences.2 They ran a series of tests on the cells, each called an olfactory receptor neuron (ORN). The cells partner up into sets called sensilla—mostly in pairs, but sometimes in groups of up to four cells.

Their results showed that one neuron in the set stimulates a particular behavior, while its partner neuron inhibits that same behavior. Example fruit fly behaviors include attraction to vinegar or promotion of egg-laying. The PNAS study authors wrote, “A striking pattern emerged…ORNs housed in the same sensillum antagonistically regulate the same behavior.”2

The team built an olfactory map that identifies exactly which receptor pairs detect and process specific odors. Researchers refer to the electrochemical interaction between these cells as valence opponency. These interactions enable ORNs to do two things at once: They detect odors and regulate their own signals. How do they do it?

Electrochemicals dance across the tiny space between neurons in a sensillum. Together, these diminutive detectors quickly calculate the proper amount and preferred effect of each odor before they send a “do” or “don’t” message. This saves the fly brain’s computing power which might otherwise get overwhelmed with a barrage of confusing scents.

When sensors are arranged in an arbitrary manner (top), conflicting odor information may confuse animals. However, the valence-based organization in fruit flies can selectively transmit positive or negative valence odor information to effectively guide behaviors.
Image credit: Johnatan Aljadeff via UCSD News Center. Adapted for use in accordance with federal copyright (fair use doctrine) law. Usage by ICR does not imply endorsement of copyright holders.
Without these elegantly paired neurons, the fruit fly brain would take more time to process what the fly is smelling. It would also take more energy.

How ingenious is all this? For that matter, how does ingenuity like this even happen? Study coauthor Johnatan Aldajeff told UCSD, “We found that nature has chosen a specific way of structuring this sensory assay.” Nature chose? Really?

When, how, and where does nature actually make choices? And if he’s using metaphorical language so that nature didn’t actually choose anything, then who actually did make the required choices to organize fruit fly sensilla?

If nature really does make design and construction choices, then where are the examples? In the real world, choices come from sentient choice-makers.

Nature is as poor a substitute for a Creator as a puddle of pigment is for a painter. An unbiased view clears the way to attribute the “marvel” of these “simple yet elegant” dual-function fruit fly nerve cells to the work of a Person with the power to choose.

References
1. Aguillera, M. A Map for the Sense of Smell. UC San Diego News Center. Posted on ucsdnews.ucsd.edu January 28, 2022, accessed February 9, 2022.
2. Wu, Shiuan-Tze, et al. 2022. Valence opponency in peripheral olfactory processing. Proceedings of the National Academy of Sciences. 119(5): e2120134119.

*Dr. Brian Thomas is Research Scientist at the Institute for Creation Research and earned his Ph.D. in paleobiochemistry from the University of Liverpool.
The Latest
CREATION PODCAST
What Happened with Washington's Violent Volcano? | The Creation...
How did a 1980 volcanic eruption change our understanding of geology? What impact did this event have on the age assignments of sediments? Join us for...

NEWS
Fossil Insect Predation Shows No Evidence of Evolution
Some recent science news stories have come out describing fossils of insects feeding on plants supposedly many “millions of years ago.” What...

NEWS
Adaptive Genetic and Epigenetic Changes in Plants
Being sedentary organisms, plants are essentially stuck where they are planted and need to dynamically adapt to the conditions around them to not only...

NEWS
Dr. Tim Clarey Awarded Adjunct Professor of the Year
Congratulations to ICR Research Scientist and geologist Dr. Tim Clarey! He received the Adjunct Professor of the Year award from King’s University,...

NEWS
Mars Rover Records Dramatic Solar Eclipse
NASA’s Mars Perseverance rover has filmed the Martian satellite (or moon) Phobos eclipsing the sun, and this short but impressive video may be viewed...

CREATION PODCAST
Darwin or Design? CET Pt. 2 | The Creation Podcast: Episode 22
How does design provide a better explanation for biological functions and adaptations than natural selection? And how can engineering principles help...

NEWS
Resurrecting “Ancient” Enzymes?
The most abundant protein on Earth is probably an enzyme (biological catalyst) called RuBisCO (or Rubisco) designed by the Creator to function in photosynthesis.1...

NEWS
Inside May-June 2022 Acts & Facts
How can Christians stand up to scientific elitism? What does the plant fossil record in Iceland tell us about the global Flood? Does a new bacterium...

ACTS & FACTS
Creation Kids: Grand Canyon
by Christy Hardy and Susan Windsor* You’re never too young to be a creation scientist! Kids, discover fun facts about God’s creation...

ACTS & FACTS
Caring for the People in Your Life
Many people relate stewardship to managing money. When they consider their resources, money comes to mind, along with vehicles, homes, investments,...