Who is this guy?

Do you think others liked him?

Do you think others liked him?

a lot of people really hated this guy.

EVEN TODAY!!! EVEN TODAY!

why?

Theory of NATURAL SELECTION! DARWIN’s He came up with an explanation on HOW we all could have evolved from common ancestors! DARWIN’s Theory of NATURAL SELECTION!

And he was a religious man!

Nobody wanted to think we came from apes!

Nobody wanted to think we came from apes! Darwin was ridiculed.

despite having more evidence today!

It’s really hard for people to wrap their minds around TENS of THOUSANDS of YEARS…even MILLIONS of years!

…this could take 5-10 MILLION years! It’s really hard for people to wrap their minds around TENS of THOUSANDS of YEARS…even MILLIONS of years! …this could take 5-10 MILLION years!

Today, we use DNA and fossil evidense to construct our evolution tree

But,over a hundred years ago, Darwin sailed to the REMOTE GALAPAGOS ISLANDS without DNA or fossil evidense.

SPECIATION (new species from older ones) SPEEDS UP whenever species become WHAT?

SPECIATION (new species from older ones)SPEEDS UP whenever species become ISOLATED.

SPECIATION (new species from older ones)SPEEDS UP whenever species become ISOLATED.

This is why the ISOLATED continent of AUSTRALIA has so many ODD creatures!

This is why the ISOLATED continent of AUSTRALIA has so many ODD creatures!

ISOLATION HELPS DRIVE SPECIATION (NEW SPECIES arising from old)

THAT’S WHAT DARWIN SAW!

Darwin sailed to the remote Galapagos Islands and saw how isolated finches on FAR-AWAY islands ADAPTED their beaks to fit their environment.

These birds eventually evolved different species of finches. Darwin sailed to the remote Galapagos Islands and saw how isolated finches on FAR-AWAY islands ADAPTED their beaks to fit their environment. These birds eventually evolved different species of finches.

HOW does DARWIN’s Theory of Natural Selection work? NATURAL SELECTION has FOUR (4) PRINCIPLES:

HOW does the Theory of Natural Selection work???? Most living things have more offspring than will normally survive. This is called: OVERPRODUCTION

HOW does the Theory of Natural Selection work???? Most living things have more offspring than will normally survive. This is called: OVERPRODUCTION

HOW does the Theory of Natural Selection work???? Most living things have more offspring than will normally survive. This is called: OVERPRODUCTION

Oy Vey!

NATURAL SELECTION’s FOUR (4) PRINCIPLES: DARWIN’s OVERPRODUCTION (LOTS of BABIES--

NATURAL SELECTION’s FOUR (4) PRINCIPLES: OVERPRODUCTION (LOTS of BABIES-- more than will survive)

And with every offspring, NO TWO OFFSPRING are ALIKE And with every offspring, NO TWO OFFSPRING are ALIKE! You are bound to have great VARIATIONS (differences).

Can you guess the sport they are in?

Can you guess the sport they are in?

Can you guess their sport? they are in?

Everyone (even twins) have physical & genetic differences

NATURAL SELECTION’s FOUR (4) PRINCIPLES: OVERPRODUCTION (LOTS of BABIES-- more than will survive) VARIATION (Everyone is DIFFERENT) physically— genetically-

PHENOTYPE and GENOTYPE!!! ALLELES…

PHENOTYPE versus GENOTYPE!!! ALLELES…

NATURAL SELECTION’s FOUR (4) PRINCIPLES: OVERPRODUCTION (LOTS of BABIES-- more than will survive) VARIATION (Everyone is DIFFERENT) physically— PHENOTYPE genetically- GENOTYPE

Often DNA __________ account for VARIATIONS of a species! Not this extreme.

Often DNA MUTATIONS account for VARIATIONS of a species! Not this extreme.

NATURAL SELECTION’s FOUR (4) PRINCIPLES: OVERPRODUCTION (LOTS of BABIES-- more than will survive) VARIATION (Everyone is DIFFERENT) physically— PHENOTYPE genetically- GENOTYPE genetic mutations good & bad!

With too many living things around, things are going to get rough! THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for ________, THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for status, THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for ______________, THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for space…opportunities, THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for _______! THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for food! THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for ________! THERE’S LOTS OF COMPETITION!!!

With too many living things around, things are going to get rough! …for mates, THERE’S LOTS OF COMPETITION!!!

NATURAL SELECTION’s FOUR (4) PRINCIPLES: OVERPRODUCTION (LOTS of BABIES-- more than will survive) VARIATION (Everyone is DIFFERENT) physically— PHENOTYPE genetically- GENOTYPE genetic mutations good & bad! COMPETITION (those with the most favorable traits WIN!)

DARWIN found COMPETITION does NOT always favor the mighty. IT IS THE BEST SUITED WHO SURVIVE!

And it is THE BEST SUITED who live longer and have more babies!!! “oh yeah I’m BAD, I’m BAD…

And it is THE BEST SUITED who live longer and have more babies!!! “oh yeah I’m BAD, I’m BAD… Oh yeah, I’m DAD, I’m DAD…”

AND SO IT GOES, THROUGH NATURAL SELECTION, A SINGLE SPECIES OVERPRODUCES VARIATIONS OF OFFSPRING (some with mutations) WHO THEN MUST COMPETE TO MAKE MORE BABIES! THIS GOES ON FOR GENERATION AFTER GENERATION AFTER GENERATION AFTER GENERATION

NATURAL SELECTION’s FOUR (4) PRINCIPLES: OVERPRODUCTION (LOTS of BABIES--more than will survive) VARIATION (Everyone is DIFFERENT) physically— PHENOTYPE genetically- GENOTYPE genetic mutations good & bad! COMPETITION (those with the most FAVORABLE TRAITS WIN!) ADAPTATION (over many, MANY generations the MOST BENEFICIAL TRAITS BECOME PART OF A SPECIES)

SURVIVAL OF THE “FITTEST!” NOTE!!! SURVIVAL OF THE “FITTEST!” NATURAL SELECTION = “FITTEST” DOES NOT MEAN “most fit”…NO!!!!

SURVIVAL OF THE FITTEST! That’s Darwin… SURVIVAL OF THE FITTEST! NATURAL SELECTION = Your species’ variations Those whose traits FIT PERFECTLY for that ENVIRONMENT!

SURVIVAL OF THE FITTEST! That’s Darwin… SURVIVAL OF THE FITTEST! NATURAL SELECTION = Your species’ variations Those whose traits FIT PERFECTLY for that ENVIRONMENT!

SURVIVAL OF THE FITTEST! That’s Darwin… SURVIVAL OF THE FITTEST! NATURAL SELECTION = Your species’ variations Those whose traits FIT PERFECTLY for that ENVIRONMENT!

Game… bird beak activity…

Tier it up!! But wait…

DARWIN’S NATURAL SELECTION There’s another guy. DARWIN’S NATURAL SELECTION LAMARCK

How did Lamarck think evolution worked? LAMARK had a good theory… He proposed that living things can acquire (get) new traits throughout a SINGLE lifetime … & pass them onto their offspring.

Like this giraffe…

Like this giraffe or Barney Fife

Lamarck gave us the idea of epigenetics! https://www.youtube.com/watch?v=kp1bZEUgqVI 1st 2:30

Lamarck gave us the idea of epigenetics! LAMARK had a good theory… He proposed that living things can acquire (get) new traits throughout a SINGLE lifetime … & pass them onto their offspring.