Genetic Analysis: An Integrated Approach (2nd Edition)
Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 19, Problem 21P
Summary Introduction

To analyze:

9 Base pair deletion in the genome of mitochondria between the cytochrome oxidase gene and tRNALys gene is a common polymorphism among Polynesians and also in a population of Taiwanese inhabitants. Polymorphic mitochondria frequency differ between populations: in the Maoris of New Zealand, (98%) highest frequency is observed, in eastern Polynesia (80%) and western Polynesia (89%), lower levels of frequencies are observed in the Taiwanese population.

The question asked to explain the idea about the settlement of the Pacific by the ancestors of present - day Polynesians.

Introduction:

The examination of variations in genome of mitochondria in human populations gives us an idea about the journey of human ancestors throughout the world (out of Africa). The variation pattern of mitochondrial DNA indicates the African origin and journey of modern humans throughout the world.

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Native American populations in North and South America have mitochondrial DNA haplotypes that can be traced to populations in northeast Asia. The Aleut and Eskimo populations in the far northern parts of North America possess a subset of the same haplotypes that link other Native Americans to Asia, and also have several additional haplotypes that can be traced to Asian origins but are not found in native populations in other parts of the Americas. Which statement offers a possible explanation for this observation? The pattern of haplotypes in the Aleut and Eskimo populations suggests that their ancestors' migration into the American Arctic regions was separate from the migrations that eventually populated the rest of North and South America. The subset of similar haplotypes between the two populations suggests that the Native American populations with a link to Asia descended from the Aleut and Eskimo populations residing in the far northern parts of North America. Sharing a subset of…
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Genetic Analysis: An Integrated Approach (2nd Edition)

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