Human Heredity: Principles and Issues (MindTap Course List)
Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 19.8, Problem 2GR
Summary Introduction

To determine: The evidence which suggests that the presence of haplotype X in genomes of Native American emerged from gene flow from the western Eurasians into Siberians or when early Europeans migrated across the Atlantic Ocean.

Introduction: The concept of gene flow is widely used in population genetics. The gene flow can be defined as the flow or movement of genes from one population to the other that belong to particular species

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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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