If Chimpanzee and Human Genomes Differ Only About 1

question 8

Multiple Choice

If chimpanzee and human genomes differ only about 1.3% at the level of DNA base pairs,how can we explain the dramatic differences in appearance,behavior,cultures,etc.,between humans and chimps?

• A)There is a correlation between increased rates of divergence with known functions of alleles in humans and chimps.
• B)Natural selection has been acting on clusters of genes associated with both survival and reproduction in humans and chimps.
• C)Important differences exist in the expression of genes in humans and chimps.
• D)Two of the above can explain the differences.

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Definitions:

Trimethylaziridine

A chemical compound characterized by a three-membered ring structure containing nitrogen and three methyl groups.

Enantiomers

Mirror-image molecules that are non-superimposable, differing in the spatial arrangement of atoms, commonly affecting their chemical behavior in a chiral environment.

Basicity

A measure of the ability of a compound to act as a base and accept protons.

Aniline

An organic compound with the formula C6H5NH2, a primary amine derived from benzene, used in the manufacture of dyes, drugs, and plastics.