Search Results for: Vertebrates
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1,539 results
1,539 results for: Vertebrates
- Physics
Broadband vision
Cells that act like optical fibers could explain why vertebrate retinas have sharp vision despite being mounted backwards.
- Animals
Virgin Birth: Shark has daughter without a dad
DNA testing of two sharks confirms an instance of reproduction without mating, adding a fifth major vertebrate lineage to those known for occasional virgin births.
- Paleontology
Big and Birdlike: Chinese dinosaur was 3.5 meters tall
Paleontologists have unearthed the remains of a gigantic birdlike dinosaur, 3.5 meters tall, that lived 70 million years ago in what is now China.
- Paleontology
Winged dragon
A quarry on the Virginia–North Carolina border has yielded fossils of an unusual gliding reptile that lived in the region about 220 million years ago.
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Anemone reveals complex past
The starlet sea anemone, a primitive creature with ancient evolutionary roots, has a surprisingly complex genome.
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Protein Lineages: Randomness was crucial to ancient genetic changes
Reconstruction of an ancient protein shows how seemingly unimportant mutations paved the way for its evolution into a molecule with an essential modern role.
- Health & Medicine
The two faces of prion proteins
Scientists are learning more about the protein behind mad cow and Creutzfeldt-Jakob disease, including how to interfere with the protein’s production in the brains of mice.
- Animals
We all sing like fish
From opera singers to toadfish, vertebrates may use basically similar circuitry for controlling vocal muscles.
- Life
How the snake got its fangs
A study of snake embryos suggests that fangs evolved once, then moved around in the head to give today’s snakes a variety of bites.
- Life
Female frogs play the field
A female frog insures a safe home for her young by mating with many males.
- Life
Climate warms, creatures head for the hills
Unusual data let scientists test predictions that global warming drives species up slopes.
- Chemistry
Class Acts from New Pesticides: Chemicals have little effect on mammals
Two new classes of selective pesticides immobilize and eventually kill many crop-damaging insects by interfering with a cell receptor unique to those pests.
