Download Evolution 3 - Western High School

Darwin Presents His Case
Chapter 10.3
I. Darwin

After Darwin returned to England in 1836 he filled notebooks with his ideas
about _______________________________________ and the process that he
would later call ____________________.

He did not rush to publish his ideas because they
__________________________________ with the fundamental scientific
________________________________ of his day.

He asked his wife to publish his ideas when he
___________________________.

In 1859

_________________________________ presented ____________________ and
proposed a _____________________ for evolution that he called
_______________________________
WHAT IS DARWINS THEORY?
o ______________________________ is found naturally in all populations
o ___________________________________ means that members of each species
must _____________________ for food, space, and other
_______________________.
o Some organisms in a _____________________ are _____________________ to
survive.
o __________________________________ organisms which are better adapted to
the environment will ___________________ and _____________________,
passing on their __________________.
VOCAB

Ability of an individual to _______________________________ in its
specific environment = _________________

Any ________________________________ that increases an organism’s
__________________________ = ______________________
o Over time, natural selection results in _____________________ in the
inherited characteristics of a _______________________.
o These changes ___________________ a species’ __________________ in its
environment.
o _________________________________________ suggests that each species has
________________________, with _____________________, from other species
over time.
o This idea suggests that all living species are
_________________________________, and that all species, living and extinct,
share a ______________________________.
EVIDENCE OF EVOLUTION:
1._____________________________
2._____________________________
3. ____________________________
4. ____________________________
5. ___________________________
6. ____________________________
7. ____________________________
1. Artificial Selection
a. In artificial selection, ________________________ provides the _____________________
through _____________________ and _____________________________ and
__________________________ those traits that they find __________________.
Ex:
2. Fossil Record
a. The Fossil Record – _______________________________________ are the
____________________________________ found in layers of rock in the Earth.
b. The layers of rock tell the history of the _________________, while the
_________________ found within the rock tell a history of _______________.
c. The fossils are thought to be the ____________________ as the rock they are found in.
3. Geographic Distribution
a. If Darwin’s theory is correct you would expect to find ________________________ yet
___________________________ living in a _____________________ region as they
spread into nearby habitats and evolve.
b. If Darwin’s theory is correct you would also expect to find ___________________________
living in ____________________ geographic regions but similar habitats becoming
____________________ as they adapt to __________________________.
c. Whales and sharks have a __________________________ body design even though they are
very ________________________________________ organisms (one is a fish; the other,
a mammal) because they have _____________________________ to living in a
_________________ environment. =
__________________________________________
4. Homologous Structures
a. Structures, like the limbs of vertebrates, look very _______, but are made from the
______________________, because they are made from the same clump of
_________________________ cells in the ___________________.
b. Some ___________________________________ are ___________________ and have
no useful function even though they are still present, like ____________________in whales
and boa constrictors, or a ________________ and ____________________________ in
humans.
c. Most mammals have a pouch between their small and large intestine that contains bacteria to
digest plants called a _________________.
d. In humans the cecum is shrunken and unused. It is our _____________________
e. HUMAN EMBRYO ___________________________________________________
5. Embryology
a. _________________________________________ of many animals with back-bones are
very similar.
6. _________________________________________________________
a. Similarities in ________________ and ____________________ sequences suggest relatedness
7. _________________________________________________________
a. There is a natural variation in populations of peppered moths.
_______________________________________________
b. The _______________________ form was the predominant form in England
_________________________________________.
c. Around the middle of the 19th century the __________________ form began to appear. It was
first reported in 1848. By 1895 98% of the moths in Manchester were the
____________________________ variety.
d. In recent years, the burning of cleaner fuels and Clean Air regulations has reduced the pollution
there and the __________________ colored moths have increased in numbers.
e. EX: Changes in disease-causing microbes that produce new organisms and
______________________.
______________________________________________
______________________________________________
______________________________________________