The recent african origin rao hypothesis is a model of human evolution which argues anatomically modern humans had an exclusive origin in africa within the last 200,000 years. Combine multiple pdf files into one pdf, try foxit pdf merge tool online free and easy to use. Combine or merge files into a single pdf, adobe acrobat dc. The out of africa hypothesis, human genetic diversity, and comparative economic development.
Explain the out of africa hypothesis using evidence from various sources to support it. Pdf merge combinejoin pdf files online for free soda pdf. Out of africa and the eve hypothesis by chris stringer. May 10, 2007 new research confirms the out of africa hypothesis that all modern humans stem from a single group of homo sapiens who emigrated from africa 2,000 generations ago and spread throughout eurasia. Modern homo sapiens can trace their origin back to homo erectus interbreeding between early hominin species in europe and asia lead to the distinctive features of modern homo sapiens modern homo sapiens and neanderthals have no common ancestor more recent than the first mammals. Its that time of the semesterexam timeand im getting a lot of questions from my students by email.
In other words, a horizontal merger is the combination of firms that are direct rivals selling substitutable products within overlapping geographical market. In paleoanthropology, the recent african origin of modern humans, also called the out of africa theory ooa, recent singleorigin hypothesis rsoh, replacement hypothesis, or recent african origin model rao, is the dominant model of the geographic origin and early migration of anatomically modern humans homo sapiens. The overall findings report interesting although not surprising results. The out of africa hypothesis is a wellsupported theory that argues that every living human being is descended from a small group in africa, who then dispersed into the wider world displacing earlier forms such as neanderthal. N10,n30,n50,o11,o50,z10 abstract this research argues that deeprooted factors, determined tens of thousands of years ago, had a significant. The first theory, known as the out of africa model, is that homo sapiens developed first in africa and then spread around the world between 100 and 200,000 years ago, superseding all other. How to merge pdf files without acrobat 247 shutterstock. Jul 26, 2014 out of africa theory officially debunked jul 26, 2014 source. Homo sapiens fossils found outside africa are not nearly as old. This research work was aimed at determining the implication of mergers and acquisitions their effects on banks performance as regards to united bank for africa uba. This was published 5 years ago out of africa theory of human evolution under fire two ancient teeth may rewrite our knowledge of how humans.
There is no positive relationship between increase in shareholders fund and the profit after tax of access bank. Our pdf merger allows you to quickly combine multiple pdf files into one single pdf document, in just a few clicks. This paper addresses the relevance of hubris theory of mergers and acquisitions in the indian context. Analysis of performance pre and post consolidation of thirteen mega banks in order to consider if there had been improvements. Merge pdf online combine pdf files for free foxit software. Original research article impacts of mergers and acquisition. The out of africa hypothesis is an evolutionary theory of modern human origin that posits that modern humans arose in the late pleistocene, about 100,000200,000 years ago, in africa. It advances and empirically establishes the hypothesis that, in the course of the exodus of homo sapiens out of africa, variation in migratory distance from the cradle of humankind in east africa to various settlements across the globe affected genetic diversity and has had a longlasting humpshaped effect on the pattern of comparative.
The out of africa hypothesis, human genetic diversity, and comparative economic development by quamrul ashraf and oded galor this research advances and empirically establishes the hypothesis that, in the course of the prehistoric exodus of homo sapiens out of africa, variation in migratory distance to various settlements across. Biology primate evolution and find homework help for other science questions at. Split pdf files into individual pages, delete or rotate pages, easily merge pdf files together or edit and modify pdf files. This is the merger of two or more companies operating in the same field and in the same stage of process of attaining the commodity or service. Introduction the continent of africa is rarely seen as collection of diverse nations, but instead as one monolithic nationstate relegated to a condition of perpetual poverty. Support for competing theories has virtually disappeared from scientific journals. In studying the genetic diversity and skull shapes of 53 human populations from around the world, a team of cambridge researchers discovered interesting proof to support the idea. Migrations out of africa out of africa model, is that homo sapiens developed first in africa and then spread around the world between 100 and 200,000 years ago, superseding all other.
Testing hubris hypothesis of mergers and acquisitions. Following the prevailing hypothesis, commonly known as the serial founder effect. We apply event study methodology to examine the shortterm market response to merger announcements in the indian banking and information technology industry. Use the combine files tool to merge word, excel, powerpoint, audio, or video files, web pages, or existing.
Genetic support for the outofafrica theory of human evolution. They found that the farther the population was from africa, the less varied its genetic makeup source. This free online tool allows to combine multiple pdf or image files into a single pdf document. Pdf impacts of mergers and acquisition on the performance. New research confirms out of africa theory of human evolution. Introduction to mergers and acquisitions 5 a horizontal merger horizontal mergers occur when two companies sell similar products to the same markets. It advances and empirically establishes the hypothesis that, in the course of the exodus of homo sapiens out of africa, variation in migratory distance from the cradle of humankind in east africa to various settlements across the globe a. Jul 18, 1995 genetic support for the out of africa theory of human evolution. The goal of a horizontal merger is to create a new, larger organization with more market share. Study 7 terms biology 151 final flashcards quizlet. To what extent has merger and acquisition affected commercial banks return on assets and their return on equity.
These acheulean cultural expansions broadly overlap the time frame of the middle outofafrica expansion event shown in fig. First, migratory distance from the cradle of humankind in east africa had an adverse effect on the degree of genetic diversity within ancient indigenous settlements across the globe. The out of africa ooa, or african replacement, hypothesis is a wellsupported theory. Umoren and olokoyo 2007 studied merger and acquisition in nigeria. One of the most common questions is how to differentiate the multiregional evolution hypothesis from the out of africa hypothesis. The out of africa hypothesis, human genetic diversity, and. New research confirms the out of africa hypothesis that all modern humans stem from a single group of homo sapiens who emigrated from. The out of africa hypothesis of comparative development.
The out of africa hypothesis, human genetic diversity, and comparative economic development quamrul ashraf, oded galor. As a general rue, the closer a country is to africa the older some of its homo sapien fossils are. It argues that every living human being is descended from a small group of homo sapiens abbreviated hss individuals in africa, who then dispersed into the wider world, meeting and displacing earlier forms such as neanderthals and denisovans. Which of the following is consistent with the out of africa hypothesis. How has merger and acquisition exercise of banks achieved a synergy. They moved eastward, following the coastlines of africa, arabia, and india, arriving in australia and melanesia at least as early as 45,000 years ago. Therefor the value of merger and acquisition deals in south africa and africa as a whole requires more robust and rigorous research like is the case in developed countries. Studies continue to back up the out of africa theory.
It is well accepted that the hominid lineage the unique human lineage since divergence from the last common ancestor with chimpanzees evolved in africa, and for twothirds of its 6millionyear history was an exclusively african clade. Sep 18, 2018 the southern dispersal route refers to a theory that an early group of modern human beings left africa between,00070,000 years ago. Educated at the university college london and bristol university, sringer is one of the leading proponents of the out of africa model of homo sapiens diffusion. Jul 19, 2019 the out of africa ooa, or african replacement, hypothesis is a wellsupported theory. This paper can be downloaded without charge from the. British paleoanthropologist chris stringer has taken a leading role in many of the earliest human origins debates. The boundaries and names shown and the designations used on this map do not imply official endorsement or acceptance by the united nations. Mar 28, 2017 nigeria remains an important investment destination, accounting for 43% of deal volume and 64% of reported private equity deal value in west africa between 20102016 h1. The widelyheldconfirmed in 2007theory that ancestors of modern humans can be traced to a single population that lived in africa about 200,000 years ago. Get an answer for contrast the multiregional hypothesis and the out of africa hypothesis for human evolution. Nov 03, 2009 chinese challenge to out of africa theory. It argues that every living human being is descended from a small group of homo sapiens abbreviated hss individuals in africa, who then dispersed into the wider world, meeting and displacing earlier forms such as. Contrast the multiregional hypothesis and the out of africa. M nei institute of molecular evolutionary genetics, pennsylvania state university, university park 168025303, usa.
The out of africa hypothesis of comparative development re ected by nighttime light intensity quamrul ashraf oded galor marc klemp april 26, 2014 abstract this research establishes that migratory distance from the cradle of anatomically modern humans in east africa and its e ect on the distribution of genetic. The out of africa theory, also known as the recent emergence and replacement hypothesis, posits that any homo erectus that migrated from africa during the early period of exodus gave rise to archaic hominin forms that would later become extinct including homo denisova and homo neanderthalensis. Some merger and acquisition activities all over the. The common origin of the latter groups is consistent with the out of africa hypothesis, that all australian, east asian, central asian, european, and new world peoples have come from a relatively small group that expanded outward from africa about 40,000 years ago. New research confirms out of africa theory of human. The out of africa hypothesis, human genetic diversity. Final boundary between the republic of the sudan and the republic of south sudan has not yet been determined. The out of africa hypothesis is sometimes dubbed out of africa 2 because it is not the first migration of homo out of africa.
There are different versions of out of africa, but its major tenet is that modern humans originated as a discrete population or species that rapidly. Chinese challenge to out of africa theory new scientist. Pdf mergers and acquisitions as a form of corporate restructuring are reform strategies recently adopted to reposition the banking sector. The oldest homo sapiens fossils are found in africa around 195,000 years ago. The out of africa hypothesis, human genetic diversity, and comparative economic development quamrul ashraf and oded galor nber working paper no. The hypothesis rests upon two fundamental building blocks.
1033 193 1457 1397 1103 435 1353 3 334 313 848 103 849 1209 783 391 1074 1601 661 350 327 853 709 304 43 1078 1219 920 588 19 1052 139