Who Will Survive?. Copy the chart below into your spiral. Describe (in complete sentences) the environment of the M&M’s. What color of M&Ms would be more common in the “population” if we allowed them to divide and we continued to prey on them?
Copy the chart below into your spiral.
Adapted to eating cacti
Oh, snap, I just found dinner.
Gosh darn it, no rabbits here.
Only one white rabbit dies
2. Survival of the Fittest: (AKA- Natural Selection)
The population, NOT the individual, changes as a result of evolution.
Survives the best, therefore make more babies, therefore more giraffes with longer necks
Live a little longer, but eventually Die off
Over several generations, the insects would become
resistant to the pesticides.
3. Descent with modification –
Monarch – tastes bad to birds
Camouflage: structural adaptation that enables an organism to blend in with its surroundings.
Creation of a new species from one common ancestor.
(CAN’T MAKE FERTILE BABIES!!)
group do not get passed on
to the other group
No, humans did not create a new species.
A liger and another Liger can not mate – they cannot have offspring – therefore a liger is not a new species.
Imagine you are the teacher grading evolution journals. All of the journals are for the same journal question. You, of course, made clear to the students that they are to work separately, and that they are not to copy each other\'s work. As you start reading, you realize that 10 consecutive words were identical between two of the journals.
1.What might this suggest? Would you be 100% sure?
2. What if 30 consecutive words were the same?
As you read more closely, you realize that all the punctuation marks, grammar mistakes and spelling errors also match exactly. In fact, 98% of papers are exactly alike.
3. Would this new realization make you more certain? Why or why not?
4. Let’s pretend that the 98% similarity is not in journal entries, but rather, the DNA between 2 different species of organisms. How might the similarity in DNA be evidence in evolution?
More modern forms of life have evolved from earlier life forms.
Fish Salamander Turtle Chick Rabbit Human
The fact that all these animals have the same bones suggests that at one time, they arose from the same common ancestor, and then, over time, adapted to their different environments.
Ancient lobe-finned fish
**The color coordination of the bones indicate that they came from the same embryonic tissue; therefore, they are homologous.
Femurs are used to walk—it is the largest leg bone in humans.
Whales have femurs, yet they cannot walk.
This is an example of a vestigial structure.
Which species is the unknown most closely related to?
What must change in order for an organism’s species to change and adapt over time?
N = long neck
n = short neck
a. G b. H c. A d. J