209_19 - GLGY209:INTRODUCTIONTOGEOLOGY Major Trends in The...

Info iconThis preview shows pages 1–9. Sign up to view the full content.

View Full Document Right Arrow Icon
GLGY 209: INTRODUCTION  TO GEOLOGY
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Major Trends in The History of Life MEGATRAJECTORY 1: from the origin of life to the last common ancestor of extant life. Last common ancestor of all extant life was a sophisticated microorganism (DNA, RNA, ribosomes, multiple enzymes, membranes with embedded proteins, ATP).
Background image of page 2
MEGATRAJECTORY 2: metabolic diversification of Bacteria and Archaea . First metabolisms were the anaerobic ones. Anaerobic chemosynthetic groups proceeded the photosynthetic ones. Biotopes were still dependent of the anaerobic microorganisms. Advent of the Photosynthetic groups did not eliminate the previous physiologies. Major Trends in The History of Life
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MEGATRAJECTORY 3: evolution of eukaryotic cells . Eukaryotes respire aerobically. Highest level of life diversification is no longer at prokaryotic level. Major Trends in The History of Life
Background image of page 4
MEGATRAJECTORY 4: multicellularity . Unprecedented ability for “multi-tasking” – division of labor among specified cell groups within entities. Major Trends in The History of Life
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
MEGATRAJECTORY 5: invasion of land. In contrast to the previous megatrajectories that reflect evolutionary changes, MT5 was an ecological expansion made possible by physiological innovations. Major Trends in The History of Life
Background image of page 6
MEGATRAJECTORY 6: Intelligence and Technology. The combination of language, symbolic thinking and expression, and technology is unique to Homo sapiens. The basic characteristics of the human intelligence are present to some degree in non- humans. Major Trends in The History of Life
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Patterns in Evolution? In the Phanerozoic times the life forms are
Background image of page 8
Image of page 9
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 43

209_19 - GLGY209:INTRODUCTIONTOGEOLOGY Major Trends in The...

This preview shows document pages 1 - 9. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online