Recent DNA Analysis of Australian Aborigines Has Revealed That Their

question 28

Multiple Choice

Recent DNA analysis of Australian Aborigines has revealed that their ancestors branched off from ancestral Europeans and Asians 70,000 to 50,000 years ago.This research indicates

• A) Aborigines developed a dark skin color independently from Africans.
• B) Australian Aborigines are direct descendants of the first modern humans to leave Africa.
• C) Aboriginal Australians have a more recent population history than Europeans.
• D) Aborigines maintained regular contact with people from other continents.
• E) Ancestral Aborigines had cultural but not genetic isolation.

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Definitions:

Arithmetically

Pertaining to or related to arithmetic, the basic branch of mathematics dealing with the properties and manipulation of numbers.

Geometrically

Pertains to or is characterized by the principles of geometry, involving shapes, sizes, and the relative positions of figures.

Negative Checks

In demographic terms, factors that decrease population growth, including disease, famine, and war, as described by Malthus.

Natural Disasters

Severe and unexpected events caused by environmental factors that result in significant damage, destruction, or loss of life.