Lab: Natural Selection Answers

In this lab, the three flocks of birds changed in numbers between generation 1 and generation 3. Why? Check all reasons.

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The data of this lab supporteddid not supportwas inconclusive for the hypothesis because there was a difference in bird

Galapogos tortoises have a number of shell variations, shown right. What are the advantages of choosing a system examining the beaks of finches instead of the shells of tortoises? Check all that apply.

An organism has two different possible traits, A and B. A graph of the population is shown right. Which of the following statements is true about Trait B? Check all that apply.

The graphs above show a change in distribution of beak phenotypes X, Y, and Z over 10 generations. Notice that Beak X completely disappears from the population by Generation 5, but reappears by Generation 10. Could this occur in nature? How?

Compare and contrast genetic engineering to the process of natural selection. Select all statements that are true.

Researchers can genetically select lettuce crops to cultivate for pest resistance. One of the concerns scientists have about genetically selected crops is that some traits for pest resistance may affect the texture of lettuce.What question could be asked to begin this investigation by looking at a measurable dependent variable?

In this lab, the three flocks of birds changed in numbers between generation 1 and generation 3. Why? Check all reasons.

The data of this lab ✔ supporteddid not supportwas inconclusive for the hypothesis because there was a difference in bird

Darwin studied actual birds on the Galapagos Islands instead of using a simulation, as you did in this lab. Studying natural selection in the field can be challenging. List at least three possible challenges Darwin might have faced.

Galapogos tortoises have a number of shell variations, shown right. What are the advantages of choosing a system examining the beaks of finches instead of the shells of tortoises? Check all that apply.

An organism has two different possible traits, A and B. A graph of the population is shown right. Which of the following statements is true about Trait B? Check all that apply.

The graphs above show a change in distribution of beak phenotypes X, Y, and Z over 10 generations. Notice that Beak X completely disappears from the population by Generation 5, but reappears by Generation 10. Could this occur in nature? How?

Compare and contrast genetic engineering to the process of natural selection. Select all statements that are true.

Researchers can genetically select lettuce crops to cultivate for pest resistance. One of the concerns scientists have about genetically selected crops is that some traits for pest resistance may affect the texture of lettuce.What question could be asked to begin this investigation by looking at a measurable dependent variable?

How does nature “select” phenotypes, such as bird beaks? Check all correct explanations.

beak distribution between generations 1 and 2.between generations 2 and 3.between generations 1 and 3.when fruit was removed.

There was a change in the environment between generations 10 and 30. The change likely caused a genetic mutation eliminated a recessive traitfavored trait Afavored trait B.

How does nature “select” phenotypes, such as bird beaks? Check all correct explanations.

beak distribution between generations 1 and 2.between generations 2 and 3.between generations 1 and 3.✔ when fruit was removed.

Below is a list of possible challenges. Check all errors that you mentioned in your answer.

There was a change in the environment between generations 10 and 30. The change likely caused a genetic mutation eliminated a recessive trait✔ favored trait Afavored trait B.

Which possible outcome below would not have supported the hypothesis?

Which possible outcome below would not have supported the hypothesis?