Video: “Origin of Species”. 1. How is evolution like a “tree of life?” All modern animals...
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Video: “Origin of Species”. 1. How is evolution like a “tree of life?” All modern animals and plants came from common ancestors like different twigs on
1. How is evolution like a tree of life? All modern animals and
plants came from common ancestors like different twigs on a tree
coming from same branches or same trunk.
Slide 3
Slide 4
1. How is evolution like a tree of life? All modern animals and
plants came from common ancestors like different twigs on a tree
coming from same branches or same trunk.
Slide 5
1. How is evolution like a tree of life? All modern animals and
plants came from common ancestors like different twigs on a tree
coming from same branches or same trunk.
Slide 6
2. According to the Watchmaker argument, if something as
complex as a watch has a designer, then people must have a designer
too since they are far more complex than a watch. How would Darwin
respond to this? Given enough time (millions, billions of years)
complex life forms could have evolved from simpler ones without
God. Adult humans develop from single cell by natural
processes.
Slide 7
3. What was the Scopes Monkey Trial of 1925 about? John Scopes
was public school teacher accused of teaching evolution in class.
Teaching evolution was illegal in Tennessee till 1967.
Slide 8
4. What did Darwin observe in artificial selection as practiced
by animal breeders and farmers that led him to develop his ideas of
natural selection? Saw how horses, cattle, vegetables were
selectively bred to get desired characteristics. Wondered how
nature might select some living things to survive over others.
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5. Lamarck suggested that characteristics that living things
acquired in life (e.g. highly developed muscles) were passed on to
their offspring. What was wrong with this explanation?
Characteristics acquired in life arent passed on to offspring.
Genes are responsible for traits that are inherited.
Slide 10
Characteristics acquired in life arent passed on to offspring.
Genes are responsible for traits that are inherited. Lamarcks view
Darwins view
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6. How does the cruelty of nature contribute to natural
selection? Not enough food for all offspring to survive. Those that
are best adapted to environment survive and pass those traits on to
offspring.
Slide 12
7. Why did Darwin not go public with his theories? What changed
his mind 15 years later? Was afraid of persecution from the church.
Another scientist was about to publish his own paper with the same
idea. Alfred Wallace
Slide 13
8. How does natural selection explain the increase of
antibiotic-resistant bacteria in recent decades? By careless use of
antibiotics and antibacterial cleaners, we are leaving the
naturally resistant ones to survive and reproduce.
Slide 14
8. How does natural selection explain the increase of
antibiotic-resistant bacteria in recent decades? By careless use of
antibiotics and antibacterial cleaners, we are leaving the
naturally resistant ones to survive and reproduce.
Slide 15
If a doctor prescribes antibiotics when you get sick, why is it
important for you to take all the pills, even if you get better
halfway through? If you dont take them all, youll leave behind the
ones that are already resistant to the antibiotic. Theyll
reproduce, meaning the antibiotic wont work next time.