Examlex
The steroid testosterone has the molecular formula C19H28O2. Given that there are two P -bond in a molecule of testosterone, how many rings are present in each molecule?
Tetrapods
Vertebrate animals with four limbs, or descent from such organisms, including amphibians, reptiles, mammals, and birds.
Lobe-Finned Fish
A group of fish characterized by fleshy, lobed, paired fins, which are precursors to the limbs of land vertebrates.
Wrist Bones
The small bones that make up the human wrist, contributing to its complex range of motion and dexterity.
Tree Topology
The arrangement of nodes and branches in a phylogenetic tree, representing the relationships among various evolutionary lineages.
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