Interpreting ancient DNA—a scientific approach that has grown powerfully during the past decade—reveals that human history is a story of mixing and migration at a scale and complexity that no one previously imagined. Waves of people and genes have flowed across oceans and continents for millennia, creating a ________ of admixture. Genetically, "race" is a broken concept, this work shows, because every population is a mixture of other populations—which are themselves mixtures of still earlier populations.4Mark for ReviewABCWhich choice completes the text with the most logical and precise word or phrase?AdisciplineBoverturnCmosaicDstandard

Each of the questions given below has a paragraph which is followed by four alternative summaries. Choose the alternative that best captures the essence of the paragraph.In scientific research, race remains a quandary. Some researchers assert that race, as a variable, captures meaningful plots of genetic ancestry – an opportunity to further big dreams like personalized medicine and ethno-pharmacogenomics. Others argue that biologic concepts of race are inextricably yoked to notions of eugenics, bigotry and burden, and decry their continued presence in medical journals. Somewhere in the middle, the inconsistencies of race in medicine perplex and gnaw at uncertain scientists, who are intimidated by the prospect of inescapable damnation. Yet despite the uncomfortable ambiguities that surround race and medicine, the variable remains present as a well-worn neighbour of scientific inquiry.Whether race provides meaningful information in scientific research is debatable; notwithstanding, race remains to be closely associated with scientific inquiry.Even though the inclusion of race in scientific research is disputed, race still plays a part in scientific research.The ongoing debate of whether to include race in scientific research makes it difficult for researchers to choose whether or not to include race in their study.While some researchers include race as a variable in their study, some do not, and the rest are ambivalent about the inclusion of race in their study.

Sociologists claim that race is __________.A.a simple reflection of human biologyB.the same all over the worldC.a socially constructed conceptD.a concept that our society views as not importantSubmit

Match the early human ancestors to the time period in which they existed.

A contrary view of human migration is the ________ which argues that Homo sapiens evolved in geographic niches then migrated back & forth between breeding populations.Group of answer choicesVariation MigrationOut of AfricaMultiregional ModelPangean Path

Genetic diversity refers to: