6.1 Fib Handout
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Transcript of 6.1 Fib Handout
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7/29/2019 6.1 Fib Handout
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Lifes Structure and Function - Origins
6.0 Orf Lf
1. A branch of knowledge dealing with a body of
______________ or ______________
systematically arranged.
2. Systematic knowledge of the ______________
or material world gained through
______________ and ______________.
3. Knowledge, as of facts or principles; knowledge
gained by ______________ study.
What is Science?
Ask a _________________
Do Background research
Construct Hypothesis
Test with _________________
Analyze results
Hypothesis is true or false --->
think, try again
_________________ findings
Scientific Method
Scientists who study the past need to use ____________________ methods than those
who study things that are observable.
They are like detective, putting clues together, trying to paint a picture of what occurred.
They use what they know about the ___________________ and what they know about
cause-and-effect relationships.
How do we test something that occurred in the past? something that occurs very slowly?
We must use ____________________ science to determine what happened in the past.
You start with the _________________ and with other knowledge you have about the
world.
You work backwards to what probably happened when you were not there to observe it.
The best explanation will be the one that explains ___________ of the evidence.
The Unknown Past/Historical Science
A doctrine or ______________ holding that matter, the various forms of life, and the
world were ______________ by ______________ out of nothing and usually in the way
described in Genesis
Various Views on the Origin of Species
Creationism
The ______________ of intelligent design holds that certain features of the universe andof living things are best explained by an ______________ ______________, not an
______________ process such as natural selection.
Intelligent Design
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Biological evolution is ______________ with modification.
This definition encompasses small-scale evolution, ______________ - changes in gene
frequency in a population from one generation to the next and...
...large-scale evolution macroevolution - the descent of different species from a common
___________________ over _____________ generations. Biological evolution is not simply a matter of change over time. Lots of things change over
time: trees lose their leaves, mountain ranges rise and erode, but they aren't examples of
biological evolution because they don't involve descent through _____________ inheritance.
The central idea of biological evolution is that all life on Earth shares a common ancestor.
Through the process of descent with modification, the common ancestor of life on Earth gave
rise to the diversity of the various species.
Evolution
What book did Darwin write explaining his theory of evolution? On the Origin of ______
Darwin travelled from England to the _____________ Islands on the HMS _________.
Charles Darwin
Darwin studied 13 species of finches. They were all similar, except for their: body ______,
beak shape and eating _______________.
Darwin thought the varieties of plants and animals could be best explained by descent from a
common ancestor.
He used the plants and animals of the Galapagos Islands as an example.
The mechanism Darwin thought that was responsible for evolution was ___________
Selection.
He argued that it had the ________________ to make ____________ forms of life.
Darwins Theory: Evolution through Natural Selection
Darwin envisioned that the finches he brought back to England had originated from finches
from _____________________.
Darwins bold insight was to apply this model to ____________________________.
Video Notes
Darwins idea became known as the theory of evolution by ________________ selection.
Natural Selection means that organisms with ________________ best
________________ to their environment are more likely to survive and reproduce. Overtime, as new data was ________________ and reported, ________________ were
made to Darwins original ideas about evolution by natural selection.
Natural Selection
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1. Organisms produce more offspring than can ________________ .
2.Differences, or variations, occur among ________________ of a species.
3.Some variations are ________________ to offspring.
4.Some variations are ________________ . Individuals with helpful variations survive and
reproduce ________________ than those without these variations.5.Over time, the offspring of individuals with helpful variations make up more of a
________________ and eventually may become a separate species.
The Principles of Natural Selection
An adaptation is any variation that makes an organism better ___________ to its environment.
Over time, the genetic makeup of a species might change its ______________________.
Many kinds of ________________________ factors help bring about changes.
When individuals of the same species move into or out of an area, they might bring in or
remove genes and variations.
Adaptation
A variation is an ____________ trait that makes an individual different from other members
of its species.
Variations result from ________________.
Some gene changes produce small variations, such as differences in the shape of human
hairlines.
Other gene changes produce large variations, such as an albino animal in a population of
normal colored animals.
If individuals with these variations continue to survive and reproduce over many generations,
a new species can evolve.
Variation
Darwin did not understand __________________, like you do. He did not know how traits are passed from one generation to another.
Once scientists learned more and more about genetics and mutations, Darwins Theory was
modified. The modern theory is called ______-Darwinism.
Darwins Theory have Evolved
The theory of evolution based on Darwins original theory of evolution of species through the
process of natural ______________ together with current understandings and theories of
_________________ and inheritance.
Neo-Darwinism
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How many species of birds have been identified in that area? _______.
The scientists were comparing species of birds in which two different ecosystems?
___________________________ and ________________________________.
What tool do these scientists have that Darwin never even dreamed of?____________.
Mistakes in copying DNA could lead to ______________________________.
Laboratory analysis shows that the DNA of the rainforest hummingbird and the highland
hummingbird differs __________________________.
What species were they discussing in this video clip? ___________________________.
It appears to look like a _________________________.
Natural Selection acts only by taking advantage of ______________, successive variations.
She can never take a ____________ and ____________ leap, but must advance by
____________ and ____________, though ____________ steps. Charles Darwin
Video Notes
There still remains much _____________ over the origin of species.
Sometimes the evidences can be explained in more than _________ way -- this is where
different theories and debates are made.
The claims of the theories cannot be tested, but by looking at all the evidence ___________,
we can decide which theory seems more ____________.
Our goal, grade 8 students, is to examine the scientific evidences and make our own educated
______________ on the origin of life.
Which Theory is Right?