DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from...

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DARWIN

Transcript of DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from...

Page 1: DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

DARWIN

Page 2: DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

DESCENT WITH MODIFICATION

• All species of organisms living on Earth today are descended from ancestral species

• Species evolve over time

• Darwin never actually used the term evolution

• Explanation for the diversity of life

Page 3: DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

NATURAL SELECTION

• The mechanism that causes species to change over time is natural selection

• In each generation, populations produce more offspring than there are adults

• Populations do not continue to grow in size

• Food and many other resources are limited

• Individuals within a population compete for resources

Page 4: DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

NATURAL SELECTION

• Individuals within all populations vary

• Many variations are heritable

• Some individuals will inherit characteristics that give them a better chance of surviving and reproducing

Page 5: DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

NATURAL SELECTION

• Over time, the population changes as advantageous characteristics become more common generation after generation

Page 6: DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

SURVIVAL OF THE FITTEST

• Fitness: the ability of an individual to survive and reproduce in it`s specific environment

• Survival of the Fittest: individuals with adaptations that increase their fitness survive and reproduce most successfully

Page 7: DARWIN. DESCENT WITH MODIFICATION All species of organisms living on Earth today are descended from ancestral species All species of organisms living.

PLEASE COMPLETE

• P307: 4, 5, 6


III.Living Organisms A.Properties of living organisms B.Cellular structure C.Metabolism and energy III. Living Organisms A. Properties of Living Organisms.

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Ecological Succession Organisms compared to Species Organisms are living things that can carry out life processes independently. You are an organism,

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Micro-Organisms. Micro-organisms are tiny living organisms. All living organisms feed, grow and reproduce. All living organisms have a life cycle to ensure.

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Biodiversity and Classification of Living Things...Biodiversity and Classification of Living Things Biological Species Concept Recall: Species –a population of organisms whose members

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