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:

Tonal

Pertaining to the character or quality of sound, especially in music, where it refers to the organization of pitches and harmonies.

Whistled Speech

An exchange of whistled words using a phonetic emulation of the sounds produced in spoken voice.

Khoisan

A term used to refer to the indigenous populations of Southern Africa, particularly known for their languages characterized by distinctive click sounds and for their hunter-gatherer and pastoralist cultures.

Endangered Tradition

A cultural practice or ritual that is at risk of disappearing or losing its original significance.