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How did your experiment show that natural selection occurred in the moth populations? Use your results to support your answer.

The moth color least fit for this environment was picked off by the predators

T/F Evolutionary change always takes millions of years

False

T/F Stickleback fish lose their pelvic spines whenever they are in fresh water

False

"Having pelvic spines is always advantageous to a stickleback."

False, in the ocean it helped but in lake, the spines helped catch the fish

"All mutations are bad.

False, some mutations can have advantages to the environment they are living in.

Use the data and what you have learned about evolution to explain how mutation is a random process, but natural selection is not random.

Mutation is a random process because you do not know what genes you will get from your parents, but natural selection is not because it depends on the environment you live in.

Define "Mutation"

Mutation is the change in the chemical letters that make up our genes and the change is random

Near the end of the film, Dr. Sean B. Carroll states that "while mutation is random, natural selection is not." In your own words, explain how this is possible.

Natural selection acts on traits which results in mutations for those traits being passed on to the next generation. If its helpful in the environment, you will see it more in later times.

What is natural selection?

Natural selection is how nature decides on who lives by who is the fittest and can adapt the easiest

What specific features of the environment in Bear Paw Lake, Alaska, may have favored the survival and reproduction of stickleback fish with reduced pelvises? Answer in two or three sentences.

There are no large predators, however there is a lack of pelvic spines. They could survive either way.

Is the following statement true or false? Justify your answer in one or two sentences: "Mutations are caused by selective pressure in the environment."

This statement is false because mutations are caused by genes and your DNA.

Is the following statement true or false? Justify your answer in one or two sentences:"The same mutation could be advantageous in some environments but deleterious in others."

This statement is true because sometimes you can blend in and not be seen by predators but in other places, you can stand out and be seen easily.

T/F Dramatic changes in traits, such as the loss of limbs, can occur through the mutations affecting a single gene

True