CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
CAMPBELL BIOLOGY IN FOCUS-MOD.MASTERING
3rd Edition
ISBN: 9780135191811
Author: Urry
Publisher: PEARSON
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Chapter 25.1, Problem 3CC
Summary Introduction

Endosymbiosis is a process in which one of the symbiotic organism lives within the other. The studies of plastid-bearing eukaryotes propose that the plastids have progressed from a cyanobacterium which was engulfed by the heterotrophic ancestral eukaryotes. This process is termed as primary endosymbiosis. This ancestor then gets differentiated into green and red algae. Approximately some of them were subsequently submerged by the other eukaryotes and this process is referred to as secondary endosymbiosis.

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