Finches
Where did Charles Darwin study multiple species of finches?
What is the Galapagos Islands?
What are the 2 variations of moths we studied?
Carbonaria (Dark) & Typica (Light) Moths
Place the following in order of the population change model:
A: Because there were fewer lichens, the lighter moths were easier to see. Predators would feed on the light moths and the darker ones would survive. The darker moths could reproduce, so they had more offspring that were dark.
B: There was a variation in the color of the moths: dark and light
C: In the area where the moths were first found, there was a lot of pollution from factories and burning coal for fuel. The pollution affected the lichens that grow on the trees where the moths rest during the day.
B, C, A
What is an example of an animal using camouflage to survive?
Answers Vary
Which is the only edible food that never goes bad?
Honey
What were the two variations of traits we studied for finches?
Large beak & small beak
What is the environmental change that affected moths?
Pollution
Why were some finches able to survive?
-The finches with longer beaks had a better chance at survival than those with shorter beak lengths.
-When the seeds that were easy to eat were gone, the finches with longer beaks could eat the remaining seeds. They survived better and the population had more large beak finches.
Give an example of a predator/prey relationship.
Answers Vary
What was the first soft drink in space?
Coca Cola
What environmental change did the finches experience?
Long drought
How did pollution lead to population change?
Pollution caused a decrease in lichen on trees which did not allow the typical moths to camouflage. This resulted in a decrease in typica moths in high pollution.
Were there any similarities between the finches and the moths?
There was variation in both populations; the variation mattered; certain individuals survived and had offspring, and the populations changed.
What are some examples of environmental changes that could lead to population change?
Natural Disasters such as wild fires, tsunamis, and tornadoes.
What is "cynophobia"?
Fear of dogs
During the drought, short beak finches were not able to break open hard to crack seeds. Long beak finches were able to break those open and continue reproducing.
When pollution decreases, which variation of moth has a higher population in that area?
Typica (Light)
How does camouflage relate to natural selection?
Organisms that best blend into their environment are most likely to survive and have offspring, and pass on their genes to the next generation.
About 15 years ago, the Asian shore crab invaded the east coast of the United States. This predator fed on a native shelled organism, the blue mussel. Scientists noticed that the blue mussels that are there now, several generations later, have a thicker shell than before the invasion. Explain how this change in the population may have occurred.
Some blue mussels had thicker shells and some had thinner shells. Those with thinner shells were more likely to be eaten by the Asian shore crab since they could get through the thin shell to eat the mussel. Over time, the population has more thicker shelled mussels since they survived and passed their genes for a thicker shell on to their offspring.
Which country do cities of Perth, Adelade & Brisbane belong to?
Australia
Which is the best term that describes how variations better able to survive will continue to grow and reproduce?
What is the species of Carbonaria and Typica Moths?
Peppered Moths
An all-white snake is born to two parent snakes that have normal coloring. Would a trait for albinism (all white) in snakes be more or less likely to become common in the population?
An albino snake would be less likely to survive and reproduce because it would stand out in its environment and likely get eaten.
How Is Selective Breeding Different from Natural Selection?
-In natural selection, there is a change in the environment that makes one variation have an advantage over the other. Those organisms with the advantage survive and reproduce. That causes a change in the population because the proportion of those organisms with the advantaged trait becomes larger.
In selective breeding, the environment does not change. Humans select, or choose, which organisms will reproduce based on what traits are wanted in the offspring. This causes a change in the population. The proportion of organisms with the selected trait will increase in the population.
What's the city with the most diversity in terms of language?
New York City