Optic components: cornea, lens, vitreous body, and the aqueous body b. Not an optic component of the eye: retina 87. Glaucoma is a state of elevated pressure within the eye that occurs when ___ is obstructed so that the _____ is not reabsorbed as fast as it is secreted. a. Occurs when the scleral venous sinus is obstructed so the aqueous humor is not reabsorbed as fast as it is secreted.
Substitution mutation. Definition. A type of point mutation in which a single nucleotide is substituted with (or exchanged for) a different nucleotide that may result in an altered sequence of amino acid during translation, which may render the newly synthesized protein ineffective. Supplement.
This type of mutation is a change in one DNA base pair that results in the substitution of one amino acid for another in the protein made by a gene.his type of mutation occurs when the addition or loss of DNA bases changes a geneâs reading frame. A reading frame consists of groups of 3 bases that each code for one amino acid.