The Noncoding Regions of Mammalian Mitochondrial Genomes Have Few to No

question 3

Multiple Choice

The noncoding regions of mammalian mitochondrial genomes have few to no repair mechanisms,but no real selective pressure.Which of the following are consequences of this condition?

• A)a rate of mutation that is much higher than that of nuclear sequences
• B)a high rate of loss of mitochondrial genomes relative to nuclear sequences
• C)a high rate of natural selection for genomes identical to those of the mother
• D)a lower rate of mutations that remain in maternal lineages over evolutionary time
• E)a rate of mutation that can increase with successive generations in a maternal line

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