Examlex
What is the McClintock Effect? How does it illustrate the effect of pheromones?
Hox Gene Clusters
Groups of genes that control the body plan of an embryo along the head-tail axis by dictating the positions of various anatomical structures.
Anterior-Posterior Axis
A directional axis in biology, referring to the front (anterior) and back (posterior) orientation of an organism or its parts.
Ray-Finned Fishes
A class (Actinopterygii) of modern bony fishes; contains about 95% of living fish species.
Tetrapods
A vertebrate group that includes all species with four limbs, such as amphibians, reptiles, birds, and mammals, including those that have lost limbs through evolution.
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