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Ch 2 QUIZ #4
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Darwin's famous book, "The Origin of Species" was controversial because
he didn't do research long enough
he stated the world was round and not flat
he was a doctor not an evolutionary biologist
it went against most people's religious beliefs
The main reason for natural selection is that organisms
have a common ancestor, but are not related
eat each other too often
need to be adapted to their environment to survive
never left Pangea
An error or change in DNA that can bring about variations
One set of 50 black and 50 white moths are placed on a dark barked tree while another set of each are placed on a light barked tree. Birds eat moths.
Which best explains the expected results in the above experiment… THE BIRDS EAT....
more white moths on the black bark and more black moths on the white bark
more white moths on the white bark
more black moths on the black bark
equal number of white and black moths on each tree
Variations in organisms happen because of mutations in the DNA and
random combinations of traits from the mom and dad
the organism wants it to happen
organisms do not have variations
A trait that allows an organism to survive in its environment
The theory of natural selection states that
random assortment of genes results in better characteristics in offspring
only individuals that mutate will survive.
the best adapted individuals survive and reproduce, and pass on their traits to the next generation.
only the largest and strongest survive.
Known as the Father of Evolution
If the environment changes, then they may not be best adapted ones anymore and all of the following can happen EXCEPT:
they will hopefully have a mutation that can adapt
they can die out
they can move somewhere they are adapted
they can make themselves change to adapt
All organisms have VARIATIONS which mean they all have
the same parts
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