Molecular clocks use genes that
A) code for TCA cycle enzymes.
B) are found primarily on plasmid DNA.
C) are involved in transcription and translation.
D) are acquired through transduction.
E) encode enzymes for glycolysis.

Question

Quizplus · Accepted Answer

Molecular clocks use genes involved in transcription and translation, such as ribosomal RNA and mitochondrial DNA, to estimate the divergence time between species. These genes accumulate mutations at a relatively constant rate over time, allowing for the calculation of the time since the last common ancestor of two species. Choices A, D, and E are incorrect as they describe genes involved in metabolic processes, while choice B is incorrect as plasmid DNA is not typically used in molecular clock analyses.

Molecular Clocks Use Genes That