Prior to the Work of Li and Others,scientists Had Estimated

question 74

Multiple Choice

Prior to the work of Li and others,scientists had estimated that Homo sapiens had lived in a limited African range at about 40,000 years ago.Migration took subpopulations away from this original area.Although speciation did not occur in this time,

• A) DNA sequence data indicated that Homo sapiens subpopulations showed little natural selection of genotypes and phenotypes.
• B) None of the answer choices are correct.
• C) DNA sequence data indicated that gradualism dominated the evolutionary history of humans in the last 40,000 years.
• D) DNA sequence data showed that people from Africa, Asia, and Europe actively interbred and maintained a constant gene pool.
• E) DNA sequence data indicated a rapid adaptive radiation, leading to microevolution of the gene pools.

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Definitions:

Visual Cortex

The part of the cerebral cortex that processes visual information.

Semicircular Canals

Structures located in the inner ear that are critical for maintaining balance and spatial orientation by detecting rotational movements.

Vestibular Sacs

Structures within the inner ear involved in the sense of balance, helping to detect changes in the position of the head.

Inner Ear

The innermost part of the ear, containing the cochlea, vestibule, and semicircular canals, which is essential for hearing and balance.