Although There Is Evidence Now That Several Human Groups Colonized

question 5

Multiple Choice

Although there is evidence now that several human groups colonized the Americas,possibly using different routes,those that crossed over through Beringia to reach the Americas did so

• A) because they were fleeing from warlike Cro-Magnon groups.
• B) in order to take advantage of large flint deposits in South America.
• C) following herds of big-game animals (woolly mammoths, especially).
• D) because they were gradually forced into new territories by the expansion of more advanced agricultural groups in Asia.
• E) in their search for colder climates, because these Neandertals were adapted to cold weather.

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Definitions:

QTL Association Studies

Quantitative Trait Loci (QTL) association studies are research methods used to identify the genetic locations associated with specific quantitative traits in organisms, such as height, weight, or disease susceptibility.

Phenotypic Variation

The observable differences in appearance and behavior among individuals of the same species due to genetic and environmental influences.

Heritability

A measure of how much of the variation in a trait within a population can be attributed to genetic differences among individuals.

Phenotypic Variation

The observable differences in the appearance, function, or behavior among individuals of the same species, often due to genetic and environmental influences.