| convergent evolution |
Convergent evolution results when unrelated species are acted on by the same selection pressure and adaptive traits tend to resemble traits in other species without a shared evolutionary lineage.
Ãâó: www.oakenstaff.org/Crayfish/terms.html
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| convergence nystagmus |
Slow abduction of eyes followed by rapid adduction. This type of nystagmus usually accompanies other types.
Ãâó:
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| convergence point |
1. The point to which rays of light converge. 2. The closest point to the patient on which the eyes can converge as the object is moved closer and closer.
Ãâó:
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| convergent-stimulus adduction |
Convergence of the eyes when the gaze is fixed on an object at the near point of vision.
Ãâó:
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| convergence n. |
a rhythmic oscillation of the eyes, in which they have a rapid adduction movement relative to each other alternating with a slow abduction movement; usually caused by a tumor of the aqueduct of Sylvius, third ventricle, or midbrain. It is often accompanied by retraction nystagmus.
Ãâó: www.mercksource.com/pp/us/cns/cns_health_library.j...
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