The first evidence of fossil life on Earth appears 3.5 billion years ago; these bacteria-like micro- fossils dominate for nearly 1.5 billion years, then 2 billion years ago eukaryotic cells that resemble modern "protozoa" and "protophyta" appear. What is the most widely accepted scientific hypothesis for the rather sudden appearance of Protista-type organisms on Earth? What evolutionary mechanism is responsible for this sudden plyletic change? Provide 3 specific examples of evidence that support this hypothesis.
The first evidence of fossil life on Earth appears 3.5 billion years ago; these bacteria-like micro- fossils dominate for nearly 1.5 billion years, then 2 billion years ago eukaryotic cells that resemble modern "protozoa" and "protophyta" appear. What is the most widely accepted scientific hypothesis for the rather sudden appearance of Protista-type organisms on Earth? What evolutionary mechanism is responsible for this sudden plyletic change? Provide 3 specific examples of evidence that support this hypothesis.
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Transcribed Image Text:The first evidence of fossil life on Earth appears 3.5 billion years ago; these bacteria-like micro-
fossils dominate for nearly 1.5 billion years, then 2 billion years ago eukaryotic cells that
resemble modern "protozoa" and "protophyta" appear. What is the most widely accepted
scientific hypothesis for the rather sudden appearance of Protista-type organisms on Earth?
What evolutionary mechanism is responsible for this sudden plyletic change? Provide 3 specific
examples of evidence that support this hypothesis.
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