Biology Lab 12 Evidence Of Evolution Answer Key Mader
Biology Lab 12: Evidence of Evolution Answer Key Mader – Tips and Tricks for Success
If you are taking a biology course, you might be familiar with the lab manual by Mader that covers various topics in biology, including evolution. One of the labs that you might encounter is Lab 12: Evidence of Evolution, which aims to help you understand how different types of data support the theory of evolution by natural selection.
In this lab, you will explore three types of evidence: fossils, comparative anatomy, and molecular data. You will also use a tool called a well plate to compare the blood serum of different animals and see how closely they are related. By the end of the lab, you should be able to answer questions such as:
- What are the characteristics of ancient, middle, and recent fossils?
- What are homologous and analogous structures?
- How do embryos show evidence of common ancestry?
- What are the basic biochemical molecules that all living organisms have?
- How can a well plate be used to measure the degree of similarity between two organisms?
To help you ace this lab, here are some tips and tricks that you can use:
Tip #1: Review the key terms and concepts before the lab
Before you start the lab, make sure you have a clear understanding of the key terms and concepts that are related to evolution. You can use the flashcards on Quizlet to review them. Some of the terms that you should know are:
- Paleo, meso, and ceno: prefixes that indicate ancient, middle, and recent time periods.
- Fossil: preserved remains or impressions of organisms that lived in the past.
- Homologous structure: a structure that is similar in different organisms because of common ancestry.
- Analogous structure: a structure that is similar in different organisms because of convergent evolution.
- Embryo: an early stage of development of an organism.
- Tail, somite, and pharyngeal pouch: features that all vertebrate embryos have in common.
- DNA, ATP, amino acids, and enzymes: basic biochemical molecules that all living organisms have.
- Well plate: a plastic plate with multiple wells that can hold liquids.
- Serum: the liquid part of blood that contains antibodies.
- Antigen: a foreign substance that triggers an immune response.
Tip #2: Follow the instructions carefully and record your observations
During the lab, you will perform various activities that involve observing fossils, comparing anatomical structures, examining embryos, and using a well plate. Make sure you follow the instructions carefully and record your observations in a clear and organized way. You can use tables, diagrams, or charts to help you organize your data. For example:
| Fossil | Type | Age | Description |
|---|---|---|---|
| Trilobite | Paleo | 540-250 million years ago | A segmented marine animal with a hard exoskeleton and three lobes. |
| Dinosaur bone | Meso | 230-65 million years ago | A large bone from a reptile that dominated the land during the Mesozoic era. |
| Mammoth tooth | Ceno | 5 million-10 thousand years ago | A large tooth from an elephant-like mammal that lived during the Ice Age. |
You should also write down any questions or hypotheses that you have during the lab. For example:
- I wonder why herbivores have broad molars while carnivores have narrow and jagged ones.
- I think that chimpanzees and humans have different postures because of their locomotion.
- I predict that pig embryos will be more similar to human embryos than chick embryos because they are both mammals.
- I expect that human serum will react more strongly with chimpanzee serum than with fish serum because they are more closely related.
Tip #3: Analyze your data and draw conclusions
After you finish the lab activities, you should analyze your data and draw conclusions based on your observations. You should also compare your results with your questions or hypotheses and see if they support or contradict them. For example:
- The type of molars reflects the diet of the animals. Herbivores have broad molars for grinding plants, while carnivores have narrow and jagged ones for tearing meat. Omnivores have a combination of both types for eating both plants and animals.
- The posture of chimpanzees and humans is influenced by their locomotion. Chimpanzees walk on four limbs (quadrupedal) and have curved spines and long arms. Humans walk on two legs (bipedal) and have straight spines and short arms.
- The pig embryos are more similar to human embryos than chick embryos because they are both mammals. They share features such as hair follicles, mammary glands, and placenta. The chick embryos are more different because they are birds. They have features such as feathers, beak, and amnion.
- The human serum reacts more strongly with chimpanzee serum than with fish serum because they are more closely related. The antibodies in human serum recognize more antigens in chimpanzee serum than in fish serum. The degree of cloudiness in the well plate indicates the degree of similarity between two organisms.
- What is evolution by natural selection?
- What are some examples of fossils that show evidence of evolution?
- What are some examples of homologous and analogous structures that show evidence of common ancestry or convergent evolution?
- What are some features that all vertebrate embryos have in common?
- What are some basic biochemical molecules that all living organisms have?
- How does a well plate work and what does it measure?
In this article, you have learned about the different types of evidence that support the theory of evolution by natural selection. You have also learned how to perform Lab 12: Evidence of Evolution using the lab manual by Mader. By following the tips and tricks that we have provided, you should be able to complete this lab successfully and answer the questions in the answer key.
Tip #4: Review the answer key and check your understanding
After you finish the lab and write your conclusions, you should review the answer key that is provided in the lab manual by Mader. You can find it at the end of the lab section or online . The answer key will give you the correct answers to the questions that are asked in the lab. You should compare your answers with the answer key and see if they match. If they do not match, you should try to understand why and where you made a mistake. You should also check your understanding of the key concepts and terms that are related to evolution. You can use the following questions to test yourself:
By reviewing the answer key and checking your understanding, you will be able to reinforce your learning and prepare for any quizzes or exams that might cover this topic.
Conclusion
Biology Lab 12: Evidence of Evolution is a lab that helps you understand how different types of data support the theory of evolution by natural selection. In this lab, you will explore fossils, comparative anatomy, and molecular data as evidence of evolution. You will also use a well plate to compare the blood serum of different animals and see how closely they are related. By following the tips and tricks that we have provided in this article, you should be able to complete this lab successfully and answer the questions in the answer key by Mader. You should also be able to review the answer key and check your understanding of the key concepts and terms that are related to evolution. We hope that this article has been helpful and informative for you. Thank you for reading!
Conclusion
Biology Lab 12: Evidence of Evolution is a lab that helps you understand how different types of data support the theory of evolution by natural selection. In this lab, you will explore fossils, comparative anatomy, and molecular data as evidence of evolution. You will also use a well plate to compare the blood serum of different animals and see how closely they are related. By following the tips and tricks that we have provided in this article, you should be able to complete this lab successfully and answer the questions in the answer key by Mader. You should also be able to review the answer key and check your understanding of the key concepts and terms that are related to evolution. We hope that this article has been helpful and informative for you. Thank you for reading!
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