EVOLUTION

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EVOLUTION
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EVOLUTION
IS THE TRANSFORMACION OF ANY POPULATION ALONG
TIME.
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Catastrophism(Cuvier)
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J. P. LAMARCK
C. DARWIN
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J. P. LAMARCK
C. DARWIN
1) BOTH AUTHORS THOUGHT IN A CONTINUE AND GRADUAL
EVOLUTION
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IS A CHANGE GIVEN ALONG MILLION YEARS.
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J. P. LAMARCK
C. DARWIN
1) BOTH AUTHORS THOUGHT IN A CONTINUE AND GRADUAL
EVOLUTION. 2) BOTH AUTHORS THOUGHT THERE WAS A
RELATION BETWEEN THE ENVIRONMENT AND THE
CHARACTERISTICS OF THE LIVING BEINGS.
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RELATION ENVIRONMENT -LIVING BEING
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J. P. LAMARCK
C. DARWIN
1) BOTH AUTHORS THOUGHT IN A CONTINUE AND GRADUAL
EVOLUTION. 2) BOTH AUTHORS THOUGHT THERE WAS A
RELATION BETWEEN THE PLACE AND THE LIVING BEINGS.
ACQUIRED CHARACTERS THE USE AND THE NOT USE OF
ORGANS MODIFIES THE LIVING BEINGS.
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J. P. LAMARCK
C. DARWIN
1) BOTH AUTHORS THOUGHT IN A CONTINUE AND
GRADUAL EVOLUTION. 2) BOTH AUTHORS THOUGHT THERE
WAS A RELATOIN BETWEEN THE ENVIRONMENT AND THE
CHARACTERISTICS OF THE LIVING THINGS.
ACQUIRED CHARACTERS
ADAPTATION
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VARIATION
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NATURAL SELECTION
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ADAPTATION
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J. P. LAMARCK
C. DARWIN-WALLACE
1) BOTH AUTHORS THOUGHT IN A CONTINUE AND GRADUAL
EVOLUTION 2) BOTH AUTHORS THOUGHT THERE WAS A
RELATION BETWEEN THE ENVIRONMENT AND THE
CHARACTERISTICS OF THE LIVING THINGS.
ACQUIRED CHARACTERS
ADAPTATION VARIATION NATURAL SELECTION (Survival
of the Fit)
Fittest (SPENCER)
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RELATION LIVING BEING- ENVIRONMENT INDIRECT
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NATURAL SELECTION
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RADIAL EVOLUTION. FROM A COMMON ANTECESOR THE
DESCENDANTS ADAPT TO DIFFERENT
ENVIRONMENTS. (Finch studies)
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Charles Darwin
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PALEONTOLOGY
Branch of Biology that studies fossils.
FOSSIL
Remains or prints of living beings that lived in
the past.
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• Same strata exist separated in space but
  representing the same time. (Sedgwick)

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Analogous Structures

• Are structure that have the same structure and
  function but different evolutionary origens
• The wing of an insect and the wing of a bird.

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Analogous Structures
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Homologous Structures

• These structures have the same structure but
  different functions

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Vestigial Structures

• Are structures that dont have any apparent
  function, but is homologous to structures in
  other organisms where the structure has a
  function. The most probable explanation is that
  these structures were modified during evolution
  to the point where they were no longer necessary.
• Ex. The pelvic bones of the whale and the pelvic
  bones of snakes and the leg bones of the
  salamander

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Vestigial Structures
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Embryonic Development

• All the vertebrate embryos show a great
  resemblance between each other in the first
  stages of development and during these stages
  they show a tail and
• The only explanation is that they all share a
  common ancestor. The development maybe the same
  but the structures differentiate later in live,
  possibly before birth.

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Embryonic Development
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Biochemical Analysis

• In the basic levels of biochemisty all living
  cells are very similar
• All use ATP as an energy source
• All have DNA
• All have RNA
• All have the same collection of 20 amino acids
• HAVE THE SAME GENETIC CODE

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Structure of Chromosomes

• The species share similarities in the number of
  chromosomes, the sequence of amino acids in
  proteins and the composition of DNA
• In fact they use all these factors to examine the
  relation between individuals