The Claim
During Drosophila indirect flight muscle development, sarcomere length increases from approximately 1.8 µm at 36 hours after puparium formation to 3.2 µm by 24 hours after eclosion, thick filament number increases from 23 to 846 per myofibril, and thin filament length extends from 560 nm to 1680 nm, demonstrating a biphasic growth pattern with early sarcomere addition followed by filament elongation.
What the research says
Not yet evaluated
We are still looking at what the research says.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In developing fruit fly flight muscles, sarcomeres grow longer, the number of thick filaments increases dramatically, and thin filaments become three times longer, showing a two-phase growth process: first new sarcomeres are added, then existing filaments lengthen.
See the scientific wording
During Drosophila indirect flight muscle development, sarcomere length increases from approximately 1.8 µm at 36 hours after puparium formation to 3.2 µm by 24 hours after eclosion, while thick filament number increases from 23 to 846 per myofibril and thin filament length extends from 560 nm to 1680 nm, revealing a biphasic growth pattern with early sarcomere addition followed by filament elongation.
In developing fly flight muscles, the muscle fibers first add new repeating units called sarcomeres side by side, then each sarcomere stretches out by making its protein filaments longer and adding more filaments around the edges, creating a dense, organized structure that can generate strong contractions.
What the research says
1 studyScientists studied how fruit fly flight muscles grow and found that the tiny repeating units inside the muscle get longer, and the protein filaments inside them multiply and stretch out—first adding more units, then making each one bigger. This matches exactly what the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
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