csu bio110 unit 4 assessment

26 Jun csu bio110 unit 4 assessment

Question
Question 1
Which of the following statements represents evidence that supports the theory of common descent but specifically contradicts the hypothesis of separate types?
The fossil record provides substantial evidence that humans and chimps share a common ancestor.
Radiometric dating methods show that Earth is billions of years old.
Many genes found in humans are also found in yeast and they perform the same function in yeast that they do in humans.
The fossil record provides copious unequivocal evidence that the species that inhabit Earth have changed dramatically over time.
5 points

Question 2
Which of the following is the best test for the theory of natural selection?
Using artificial selection to produce different breeds of dogs
Exposing a population of rapidly replicating organisms to selection that kills a large percentage over the course of many generations, and then comparing the final generation to a population that was not exposed to the variable.
Observing a group of rapidly replicating organisms for many generations, and seeing if there was any change in their genes relative to the original population.
Introducing chimpanzees to different social settings in order to see how their behavior can be changed
5 points

Question 3
What is biological evolution?
The development of traits that organisms need in order to become more complex.
Gene changes in populations over many generations.
The change that occurs in individuals as they try to survive in their environment.
The steps by which the first life was created on Earth from random molecules.
5 points

Question 4
Which of the following best describes why the process of evolution is easier to study in fruit flies than in birds?
Fruit flies have a much shorter generation time than birds.
Fruit flies are smaller than birds.
Fruit flies have a simpler diet than birds.
Fruit flies don’t live as long as birds.
5 points

Question 5
The “tree of life” model gives information about the ________.
the selection pressure that led to the divergence of a common ancestor into modern species
the precise time period during which organisms lived
relationships among species
geographic ranges of certain organisms
5 points

Question 6
Which of the following groupings is the most appropriate, according to the classification system developed by Linnaeus?
Group 1: whale, giant fruit bat, giant walking stick (an insect); Group 2: penguin, ostrich, human; Group 3: hummingbird, bee, water strider bug
Group 1: penguin, ostrich, hummingbird; Group 2: water strider bug, giant walking stick (an insect); Group 3: whale, human, giant fruit bat
Group 1: hummingbird, ostrich, bee; Group 2: whale, human, penguin; Group 3: giant walking stick (an insect), water strider bug, giant fruit bat
Group 1: penguin, water strider bug, whale; Group 2: ostrich, giant walking stick (an insect), human; Group 3: hummingbird, bee, giant fruit bat
5 points

Question 7
Which of the following statements about the gene pool of a species is true?
The genes in a species are only part of a universal gene pool that encompasses all species.
The gene pool is different in different individuals of the same species.
Every individual of a species carries part of the gene pool for that species in its chromosomes.
Every individual of a species carries the whole gene pool for that species in its chromosomes.
5 points

Question 8
Which of the following statements best describes the current knowledge about Earth’s biodiversity?
It is relatively common for scientists to discover new or fossil organisms that are completely different from other organisms.
Most species that have existed on Earth are alive today.
There is uncertainty about the diversity within various species.
Scientists generally agree that most species have been identified.
5 points

Question 9
How is artificial selection different from natural selection?
Artificial selection is the only kind of selection that can occur in a laboratory.
Artificial selection is selection by humans rather than the environment.
Artificial selection changes traits but not genes.
Artificial selection can occur over one or two generations as opposed to many generations.
5 points

Question 10
Which of the following statements is true about a biological race?
Normally, biological races will evolve into separate species as time goes on.
Biological races can maintain their separate identities even if gene flow occurs frequently between them.
Biological races can be classified as more advanced and less advanced varieties.
Biological races form, similar to biological species, by restricting gene flow among groups.

Natural Selection

Unit IV Assessment

Introduction

Scientists have figured out how to extract DNA from various cells. Extracting DNA is very important concerning heredity, legal issues, and criminal issues. In this lab, you will simulate collecting human cells and will conduct various virtual laboratory techniques in order to extract DNA from a human cell.

Objectives

1. Explain natural selection.

2. Analyze the progression of disease mutation or traits based on the theory of natural selection.

3. Provide the scientific names of various organisms.

Materials

Computer with internet access

Directions:

1. Go to: http://www2.edc.org/weblabs/NaturalSelection/Main.html

2. Read the information on each slide, and follow the directions on each slide. For this exploration activity, you only have to conduct the activity using mice.

3. On screen 2, click on Mice.

Type all answers directly on the data sheet.
Select Save As, and use your last name and student ID as a file name.
Upload the data sheet as a .doc, .docx, or .rtf file when finished.
Questions 1 – 10 are short answer questions and should be answered in 2 to 3 words or 1 to 2 complete sentences. Each question is worth 3 points for a total of30 points.

1. What is the scientific name of the common house mouse? (Make sure you type it correctly.)

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2. What color was most of the mice in the beginning of the activity?

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3. Form a hypothesis as to what you think will happen (in reference to the mice and fur color) if no cats are allowed in the granary?

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4. What actually happened to the number of the mice?

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5. Why do you think what you observed occurred?

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6. Form a hypothesis as to what you think will happen (in reference to the mice and fur color) when cats are allowed into the granary?

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7. Why did the number of yellow mice decrease?

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8. What happened to the number of yellow mice when the granary was painted yellow?

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9. In order for the different numbers of the mice to change, did the gene for color mutate depending on the presence of the cat or color of paint?

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10. Did the individual mice present change their color based on the presence of the cat or color of paint?

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Question 11 is an extended response question and should be at least 200 words. Total: 20 points

Consider the following scenario. You suddenly realize that you have a population of mice living in your attic. You do not want to put out traps or poison, so you decide to get a cat. The cat is fast; however, the cat is not as fast as the very fast mice. There are a total of 20 mice living in the attic. Of the 20 mice, 10 are very fast, 5 are medium fast, and 5 are very slow.

11. A few weeks pass, and there are fewer mice; however, you still have some mice in the attic. After a few months, it seems that there are even more mice than there were to begin with. Why do you have more mice than you did when you first bought the cat? Why do we not see situations such as this happening in humans as often as we see them in other organisms?

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