Oil Pumps Are Being Discussed

question 7

Multiple Choice

Oil pumps are being discussed. Technician A says gerotor pumps are used on OHC engines. Technician B says the gerotor pump has an uneven pumping action. Who is right?

• A)Technician A
• B)Technician B
• C)Both technicians
• D)Neither technician

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Definitions:

Mitochondrial DNA

The DNA located in mitochondria, passed from mothers to their offspring, and used in studies of maternal lineage and evolution.

Time to Coalescence

The period it takes for all alleles of a gene in a population to trace back to a single ancestral allele.

Maximum Likelihood

The maximum likelihood is an approach used to estimate parameter values for a statistical model. Maximum likelihood and the similar Bayesian method are used in phylogeny reconstruction to find the tree topologies that are most likely, given a precise model for molecular evolution and a particular data set.