Physical Anthro Quiz 1

Front 1

1st Principle?

Back 1

The first principle of natural selection is in any population more individuals are born than can survive.

Front 2

2nd Principle?

Back 2

The second principle is that all physical individuals will exhibit variation.

Front 3

3rd Principle?

Back 3

The third principle is those individuals with the best suited physical variation relative to the environment will survive. Nature will select who will survive.

Front 4

4th Principle?

Back 4

The fourth principle is different reproductive rates. Those individuals with the best suited trait(best fit) survive in greater number and reproduce in greater numbers. Those individuals without the best suited trait (less fit) survive in fewer numbers and reproduce in fewer numbers.

Front 5

5th Principle?

Back 5

The fifth principle is that eventually, overtime, those less fit can gradually decrease to zero.

Front 6

Principle #1 -applying natural selection to giraffe

Back 6

More giraffes are born than can survive.

Front 7

Principle #2-applying natural selection to giraffe

Back 7

2.There is variation in giraffe neck length. Some are long and some are short, this being 60 million years ago.

Front 8

Principle # 3-applying natural selection to giraffe

Back 8

3.The longer neck is the best suited trait because it can touch the tree leaf. The longer neck giraffe survives because it has an advantage, it has a selective advantage. It can reach the tree leaves. The shorter neck giraffes are competing for resources on the ground.

Front 9

Principle #4-applying natural selection to giraffe

Back 9

4. Giraffes with the longer necks survive in greater number and reproduce in greater numbers. The shorter neck giraffe survive, but survive in fewer numbers and reproduce in fewer numbers.

Front 10

Principle #5-applying natural selection to giraffe

Back 10

5. Gradually overtime being, 60 million years, the number of short neck giraffes did decrease to zero.

Front 11

Incorrect meaning of Survival of the Fittest

Back 11

It is strongest biggest and fastest

Front 12

Correct meaning of Survival of the Fittest

Back 12

1.) Correct: Fittest-best suited trait-relative to environment
2.) Even the less fit can survive, they can survive in fewer numbers. Therefore, they can reproduce in fewer numbers.

Front 13

Before Industrialization

Back 13

There is variation in moth color. There were light moths and dark moths. The tree bark was light. The best suited trait was the light moth, The less fit trait was the dark moth. The dark moths is the less fit trait because it was visible to predators. The predators were the birds. The light moths survives in greater numbers and reproduces in greater numbers. The dark moth survives, but in fewer numbers and reproduces in fewer numbers. Therefore, even the less fit survive. Being big strong and fast is irrelevant.

Front 14

During Industrialization

Back 14

¶3-During Industrialization
There is a change in the environment due to industrialization. Industrialization causes pollution, which then changes the tree bark to a dark color. The dark moth becomes the best suited trait. The less fit is the light moth which is visible to the predator(bird). The dark moth survives in greater number and reproduces in greater numbers. The light moth survives, but in fewer numbers and reproduces in fewer numbers. Even the less fit survive.

Front 15

Post Industrialization

Back 15

There is again change in environment. The pollution laws decreased pollution. The tree bark is restored to it’s light color. The light moth once again becomes the best suited trait and it survives and reproduces in greater numbers. The less fit is the dark moth and it still survives. The dark moth survives in fewer numbers and reproduces in fewer numbers. Even the less fit survive. The fifth principle does not apply to the moths.