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Dorsal in Biological Definition

Brain

... The brains of craniates develop from the anterior section of a single dorsal nerve cord , which later becomes the spinal cord . In craniates, the ... to each other on either side of the esophagus by the basal lobes and the dorsal magnocellular lobes. The large optic lobes are sometimes not considered to ...

Convergent evolution

... relay describes how independent species acquire similar characteristics through their evolution in similar ecosystems, but not at the same time ( dorsal fins of extinct ichthyosaurs and sharks ). Parallel evolution occurs when two independent species evolve together at the same time in the same ...

Drosophila

... , a phylum of segmented animals with paired, jointed appendages and a hard exoskeleton made of chitin . They have an open circulatory system with a dorsal heart, hemocoel occupies most of the body cavity, and coelom is reduced. The insect respires by means of air-filled internal tubes, the ...

Convergent evolution

... relay describes how independent species acquire similar characteristics through their evolution in similar ecosystems, but not at the same time ( dorsal fins of extinct ichthyosaurs and sharks ). Parallel evolution occurs when two independent species evolve together at the same time in the same ...

Parallel evolution

... relay describes how independent species acquire similar characteristics through their evolution in similar ecosystems, but not at the same time ( dorsal fins of sharks and ichthyosaurs ). A similar banding pattern that is found in almost all species of moths is another example of parallel ...

Varicella zoster virus

... . Even when clinical symptoms of varicella have resolved, VZV remains dormant in the nervous system of the host in the trigeminal and dorsal root ganglia . In about 10-20% of cases, VZV later reactivates later in life to produce herpes zoster (shingles) and its associated sequelae ...
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