What Did Richard Green Et Al

question 14

Multiple Choice

What did Richard Green et al. conclude from their study about interbreeding between Neanderthals and modern humans?

• A) They found that genomes of African humans do not contain Neanderthal-derived DNA, indicating that Neanderthals did not interbreed with modern humans after moving out of Africa.
• B) They found that genomes of African humans do not contain Neanderthal-derived DNA, but 1% to 4% of the genome of typical non-African humans is derived from Neanderthals, indicating interbreeding.
• C) They found that genomes of African humans contain 1% to 4% Neanderthal DNA, indicating that Neanderthal speciation occurred after humans left Africa and there was no interbreeding with modern humans.
• D) They found no distinguishing differences in African and non-African DNA comparisons, indicating that Neanderthals were simply a phenotypically different population of modern humans and should not be considered a separate species.

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Definitions:

Experimenter Bias

A form of research bias where the expectations of the researcher unintentionally influence the outcome of an experiment.

Subject Bias

A form of bias caused by variations in participants' responses for reasons unrelated to the experimental manipulation.

Rating Scale

Assessment in which a numerical value is assigned to specific behavior that is listed in the scale.

Frequency Count

Assessment in which the frequency of a particular behavior is counted.