It will be interesting to test if this pattern holds in other organisms with homomorphic sex chromosomes, which are widely found among amphibians and fishes, especially given their high diversity of sex-determining systems55,56. Seeking evidence for Haldane's rule through experimental crosses may ...
Our understanding of the evolution of sex chromosomes has increased greatly in recent years due to a number of molecular evolutionary investigations in div
Potts in the last number of NATURE furnishes us with a few interesting facts regarding the Kea. In a paper which I read about three years ago to the Dumfries Natural History Society, entitled ``The Influence of the Human Period on the Sagacity of Animals,'' and subsequently in a letter ...
the caterpillars bore into the new growth of the pine tree, causing the tips of the branches to curl and turn brown. However, here’s the interesting part: the caterpillars don’t stop there!
Juveniles had flat skulls with horns. However, as the animal grew, the horns would shrink and become rounder to form a dome. Evolution and History Pachycephalosaurus evolved sometime during the Late Cretaceous Period, about 76 million years ago. It belongs to the suborder Pachycephalosauria ...
Evolution And History The sea squirt has a very tiny brain in its larva stage. ©littlesam/Shutterstock.com Because the sea squirt is a soft-bodied animal, there is a severe lack of any fossil records or history for the species. There is some evidence that they were around during the ...
You’re walking through the woods and notice an interesting looking spider in the middle of its web from a distance. You decide to go in for a closer look. You make that ‘quizzical dog face’ because it’s a pretty weird-looking spider. As you get closer, something seems a little ‘...
Many slow-moving animals have developed unique mating rituals or communication methods to attract partners. For instance, seahorses engage in elaborate dances with potential mates. The Kakapo parrot uses deep resonating calls to attract females. Evolution ensures that even the slowest creatures have a ...
Evolution and Origins Interestingly enough, Scorpions first appeared as an aquatic organism in their evolutionary history. Studies suggest that they certainly evolved from the Eurypterids or sea scorpions, a group of extinct marine anthropods, since both groups share several common morphological features...
She got dive-certified so she could dive with the Great White Sharks someday and is hoping to swim with the Orcas as well. Related Articles You May Find Interesting What’s Threatening the Horned Marsupial Frog? There are hundreds of species of frog in the world, each with unique and ...