What characteristics make a gene a good candidate for determining the evolutionary relationships between organisms?

A) highly conserved
B) universally distributed
C) transferred horizontally between species
D) highly conserved and universally distributed


Answer: D

Biology & Microbiology

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Membrane delimited intracellular structures that perform specific functions in cells are called

A. organs. B. organelles. C. tissues. D. systomis.

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The cell's metabolic reactions involve the participation of ________ that lower the activation energy needed for the initiation of a reaction.

A. vitamins B. enzymes C. cofactors D. coenzymes E. ATP

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Cancer is ________

A) uncontrolled cell growth B) any tumor in the body C) cells with proto-oncogene activated D) what happens when cells get old

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Effective antiviral drugs are usually associated with which of the following properties?

A) interference with viral replication B) prevention of the host from becoming infected C) removal of viral proteins D) removal of viral mRNAs

Biology & Microbiology