15-1 The Puzzle of Life's Diversity - Liberty Christian …classroom.libertychristian.com/ClassDocuments/17909/12Ch...15-1 The Puzzle of Life's Diversity Evolution is the process by

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Copyright Pearson Prentice Hall

15-1 The Puzzle of Life's

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15-1 The Puzzle of Life's Diversity

Evolution is the process by which modern organisms

were believed to have descended from ancient

organisms.

A scientific theory is a well-supported testable

explanation of phenomena that have occurred in the

natural world.

15-1 The Puzzle of Life's Diversity


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Macro vs. Micro

Microevolution (small) refers to changes that occur

with in a species. No scientist (Christian or non-

Christian) will refute microevolution.

Example #1 - Noah did not take two German

shepherds, two dachshunds, and two poodles on the

ark. He took two dogs (or perhaps even two wolves)

and from that time we have had many changes within

a species to produce all the different breeds. But

they are still all the same species.



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Example #2 – there is a human trait that is a

dominant genetic trait called “polydactyly” where

there are 5 fingers AND a thumb on each hand.

If this is a dominant trait, does that mean that Adam

and Eve each had 5 fingers and a thumb?

What happened that it is more common to have 4

fingers and a thumb on each hand in this day and

age?



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polydactyl



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Macroevolution refers to the theory that one species

transforms into another completely different species

(the idea that birds evolved from dinosaurs).

This is what the general population is refering to with

the term “evolution”.

When our book refers to evolution, and for the

remainder of this chapter, we will be talking

specifically about macroevolution.



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Young Darwin

Charles Darwin -

Charles was raised in a religious home and brought up to pray.

His dad encouraged him to be a clergyman.

Darwin was quoted saying “I liked the thought of

being a country clergymen…..I did not then in the

least doubt the strict and literal truth of every word

in the Bible.”



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He studied for 3 years at Christ’s College in

Cambridge, England.

While there he became very interested in beetles and

started large collections to study them.

Before he had the opportunity to enter the ministry,

he went on a voyage paid for by his father to help

encourage his curiosity in nature.



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Voyage of the Beagle

Voyage of the H.M.S. Beagle

In 1831, Darwin set sail from England aboard the

H.M.S. Beagle for a voyage around the world.

Darwin went ashore and collected plant and animal

specimens for his collection.

He studied the specimens, read the latest scientific

books, and filled many notebooks with his

observations and thoughts.


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On board Darwin began to doubt the truth of

Genesis when he read a book called the Principles

of Geology by an author named Charles Lyell.

Later when Lyell died in 1875, Darwin wrote these

words honoring Lyell, “I never forget that almost

everything which I have done in science I owe to the

study of his (Lyell) great works”.



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During his travels, Darwin made

numerous observations and collected

evidence that led him to propose a

hypothesis about the way life changes

over time.

That hypothesis has become the theory of

evolution.


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Darwin's Observations


Darwin observed that many plants and animals

were well suited to the environments they

inhabited.

He was impressed by the ways in which organisms

survived and produced offspring.


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Darwin was puzzled by where different species lived

and did not live.

Grasslands in some regions were similar to one

another but were inhabited by very different animals.


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Living Organisms and Fossils

Darwin collected the preserved remains of ancient

organisms, called fossils.

Some of those fossils resembled organisms that

were still alive.

Others looked completely unlike any creature he

had ever seen.


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The Galápagos Islands

Darwin observed that the Galápagos Islands were

close together but had very different climates.

Darwin observed that the characteristics of many

animals and plants varied noticeably among the

different islands of the Galápagos.


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The Journey Home

Darwin wondered if animals living on different islands

had once been members of the same species.

These separate species would have evolved from an

original South American ancestor species.


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Darwin convinced himself that everything in nature

had come about by accidental, unguided,

purposelessness actions rather than by the result of

meaningful intention, divinely guided, and on purpose

actions.

His rejection of the Genesis account caused him to

also deny the rest of the Old Testament.

In his autobiography, he wrote “I had gradually come

by this time, to see that the Old Testament was no

more to be trusted than the sacred books of the

Hindus or the beliefs of any barbarian.”



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After he abandoned the OT, he then renounced the Gospels (Matthew, Mark, Luke and John).

He wrote, “I never gave up Christianity until I was 40 years of age.” (1849)

After several years of study, the result was a book called Origin of Species first written in 1859.

Darwin died on April 19, 1882 at the age of 73. He was a self-acknowledged agnostic (one who thinks it is impossible to know whether there is a God, or a future life).
