Research Indicates That the Tibetan and Han Chinese Inherited a Variant

question 55

Multiple Choice

Research indicates that the Tibetan and Han Chinese inherited a variant EPAS1 allele from ____.

• A) a common Denisovan ancestor
• B) interbreeding with Denisovans while still a common ancestral group
• C) interbreeding with Denisovans as distinct groups with overlapping territories
• D) an ancestor common to all humans
• E) an ancestor shared with the Andean people

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Definitions:

Cyclopentene Oxide

A cyclic ether with a three-membered epoxide ring adjacent to a cyclopentene structure.

Racemic Mixture

A mixture containing equal amounts of two enantiomers, resulting in a substance that has no optical activity.

Meso Trans-1,2-Diol

A specific stereochemical form of a 1,2-diol where the compound has two identical chiral centers but is overall achiral because of symmetry, resulting in a meso compound.

Lasalocid A

A polyether antibiotic used as an anticoccidial agent and in veterinary medicine to control coccidiosis.