What Damage Can Result from Using the Prophy Angle at a High

question 31

Multiple Choice

What damage can result from using the prophy angle at a high speed?

• A)It can cause frictional heat that can damage the tooth.
• B)It can remove dentin.
• C)It can cause frictional heat that can burn the gingiva.
• D)Both a and c can result.

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Definitions:

Introgression

Introgression describes the movement of alleles from one species or population to another.

Incomplete Lineage Sorting

Occurs when a genetic polymorphism persists through several speciation events. When fixation of alternative alleles eventually occurs in the descendent species, the pattern of retention of alleles may yield a gene tree that differs from the true phylogeny of the species.

Genetic Hitchhiking

Genetic hitchhiking occurs when an allele increases in frequency because it is physically linked to a positively selected allele at a nearby locus.

Molecular Phylogenetic Studies

Research that uses the molecular sequences of DNA, RNA, or proteins to infer the evolutionary relationships between different species or organisms.