The evolution lab answer key 2

NOVA Home. Students will complete the Evolution Lab with an understanding of how to build phylogenetic trees and the evidence for evolution. The Evolution Lab is best used as an introduction to an evolution unit. Students should possess prerequisite knowledge of the structure of DNA in order to complete several of the missions. The Evolution Lab is designed to be implemented in a teaching unit over the course of several class sessions.

Teachers should allot about 3 hours to complete both the game and the worksheets. The missions must be completed in chronological order.

To see how the Evolution Lab can be used to meet course objectives, download our standards alignment document below:. Evolution Lab Standards Alignment Guide file missing!

Investigation: What Factors Influence the Rate of Evolution?

Evolution Lab Support Guide file missing! These worksheets contain questions for each level and video of the Evolution Lab and provide assessment on topics like cladograms, fossil evidence of evolution, DNA and genetics, biogeography, applications of phylogeny to health, and human evolution.

The worksheets are divided into missions and are designed to be completed while playing through the game. The worksheets feature multiple choice questions, short response questions, and cladogram drawings. Evolution Lab Worksheets file missing! Students are encouraged to login via a PBS, Gmail, or Facebook account in order to save their progress. Students can quickly create a PBS account using their email address and a password.

Alternatively, students can also use PowerPoint, Keynote, Prezi, or other digital presentation software for the lesson plan activity.

the evolution lab answer key 2

The Evolution Lab includes seven short animated videos that introduce the missions and explore the evidence for evolution:. This lesson plan was written in the 5-E format, a lesson plan model for guided inquiry in science classrooms. Engage 15 min : Introductory activity that poses a question or calls upon prior knowledge. Before launching the Evolution Lab, present students with a selection of seven widely different species, including a plant, a fungus, two mammals, a reptile, a bird, and a dinosaur.

Instruct students to independently answer these questions:.For an animal that lives in shallow water, what is the advantage of having eyes on the top of its head? You must be signed in to save work in this lesson. Log in. Ichthyostega is a million-year-old fossil from Greenland. Ichthyostega had digits, eyes on the top of its head, and strong, armlike bones. It also had no gills and a reduced tail—traits it had in common with Tulerpeton. Acanthostega, Eusthenopteron, and Tiktaalik all had gills and full tails.

Use the abbreviations provided to draw a phylogenetic tree that includes Ichthyostega with the "Visualize It" button below.

Click the button below to answer questions Remember to refer to your completed tree and the species comparison tab if you are not sure of your answers. Page 3 of 4. After a few billion years of nothing but single-celled organisms, multicellular life developed. Organisms evolved tissues and organs. Plants developed spores, flowers, and seeds.

Animals developed complex neurological systems and external and internal skeletons. And, of course, bacteria evolved novel methods to live just about everywhere on Earth. One of these great transitions is the subject of this level. Have you ever heard of an animal called Tiktaalik? How about Acanthostega? They are but two of the many remarkable fossils we have that document the transition of animal life from water to land.Or better yet, step outside. A squirrel darts past.

Trees and weeds surge up towards the sky. Birds tickle the air. It was 5 years. And that voyage made him into a thinker. Why are similar looking species sometimes located on opposite sides of the planet? It was Darwin and Alfred Russel Wallace — who independently puzzled out a mechanism behind evolution. And it depends on two key ingredients. The first is some way of getting features, or traits, to be inherited from one generation to the next, which usually means reproduction.

The second is variation. If organisms were to make exact duplicates of themselves every time they reproduced, nothing would change.

Whatever it is, organisms compete for resources. And this is where selection comes in. For instance, scientists believe that a few hundred thousand years ago, before there were polar bears, some brown bears got stranded in the Arctic. The few that survived likely had fur coats that were a bit thicker, and lighter in color than the others.

And gradually, other changes accumulated too. Until this population became a separate species from the brown bears. However, if we were to swap out the snow for a forest, having polar bear-like fur would likely be a bad thing.

NOVA Labs: "The Evolution Lab"

With so many environments selecting for all kinds of traits, evolution has resulted in the countless species that have lived on Earth. Like this image he sketched in one of his notebooks. That is, they all can be traced back to a common ancestor.

Stories of beauty, and of remarkable adaptation to an ever-changing world. The breadth of this — that is amazing.

the evolution lab answer key 2

To see how evolution really works, and understand why it matters to you. Like: did you eat a dinosaur last night for dinner?Objective: In this lab, you will use a computer simulation to track a population of organisms as they evolve.

The simulation allows you to change certain features of your population, like mutation rate and selection strength. Your goal is to gather data, graph the data and analyze which factors influence the rate of evolution. Go to www. Read the introduction and the contents to learn about the imaginary creatures you will be studying and how to operate the simulator.

You may also want to look at the help link. Open the simulator and practice using the controls before you go on to the real simulation. Be sure to "reset" the simulator when you're finished practicing. Simulation A - Question: How does increasing the mutation rate affect the evolution of your population?

MISSION 6 — You Evolved, Too

Experiment: Run four trials, each having a different mutation rate. Mutation rate can be adjusted under "settings," leave selection strength at. Run four trials, each having a different mutation rate. Record your data on the Blank Data Tables doc as you run the simulations. Simulation B - Question: How does increasing the selection strength affect the evolution of your population?

Experiment: Run four trials, each having a different selection strength. Mutation rate can be adjusted under "settings," leave mutation rate at.

Answer the following questions on a separate page, title this page "Evolution Simulation" and make sure your name is on it. Describe how the simulation models natural selection and evolutioninclude a definition of both of these terms. Explain HOW the mutation rate affects the evolution of your populations, use the prediction statements above to help you make a concise statement about the efffect of mutation rate on evolution. Explain HOW altering the selection rate affects the evolution of your populations, use the prediction statement again.

Explain WHY altering the selection rate affects the evolution of your populations and include a definition of what selection strength is for your population.

HS- LS Construct an explanation based on evidence that the process of evolution primarily results from four factors: 1 the potential for a species to increase in number, 2 the heritable genetic variation of individuals in a species due to mutation and sexual reproduction, 3 competition for limited resources, and 4 the proliferation of those organisms that are better able to survive and reproduce in the environment.

HS- LS Construct an explanation based on evidence that the process of evolution primarily results from four factors: 1 the potential for a species to increase in number, 2 the heritable genetic variation of individuals in a species due to mutation and sexual reproduction, 3 competition for limited resources, and 4 the proliferation of those organisms that are better able to survive and reproduce in the environment Credits: Special thanks to Leif Saul, author of Biology in Motion and the creator of the Evolution Lab.More Info.

In the Evolution unit, students consider whether an extinct species should be brought back to life as they begin to explore evolution. Students examine fossils as they continue to distinguish between observation and inference.

A role play presents the basic concept of evolution and the process of natural selection. Activities model the lines of evidence for evolution, natural selection, and the role of genetic mutations. Finally, students evaluate the impact of humans on the extinction and evolution of species. Content in Evolution is organized into 13 activities, as follows:. The Evolution soft cover Student Book guides investigations and provides related readings.

The Student Book uses a variety of approaches to make science accessible for all students. This allows them to adjust activities when needed so that all students get the best chance to build their knowledge and appreciation of science.

It has a 2 column design and plenty of room for notes and responses to Analysis Questions. Graph Anywhere allows data tables and graphs to be drawn in a fraction of the usual time. All SEPUP materials packages are designed with teachers, students and environmental considerations in mind. Materials packages include most of the items needed for the activities. They support multiple classes — typically up to five classes of 32 students total students — before consumables need to be replaced.

Exclusive to SEPUP programs are the molded tray liners that keep everything in place and easy to locate — even in a hurry. The Teacher Resource provides background and suggestions to increase the overall effectiveness of implementing the program across all levels of learners.

Individual, classroom or district licenses can be purchased for access to our student books on-line. It features editable Word documents for each set of Activity Assessment Questions which allows students to e-mail their finished work back to the teacher. The Spelling and Grammar Checker uses red and green underline squiggles representing spelling red and grammar green errors alerting students to potential errors. The thesaurus helps to refine writing as well as expose students to new vocabulary words.

Students with poor spelling skills often have difficulty using a dictionary. This feature provides an instant definition for a highlighted word, eliminating the task of dictionary look-up. Students can also use the Thesaurus to find the synonyms of words. All pages were created using Adobe Acrobat Reader.

The program audibly reads the text, allowing the student to follow the reading on the page.Click the button below to answer questions Remember to refer to your completed tree and the species comparison tab if you are not sure of your answers.

You must be signed in to save work in this lesson. Log in. A clade is a fancy word for any group in a phylogenetic tree that includes an ancestor and all of its descendants. A simplified dinosaur tree is to the right. Imagine that you have a pair of scissors and can cut the tree.

Five different clades have been marked on the tree with brackets. The clade marked 1 is clade Aves—the birds. The clade marked 2 is clade Theropoda—the theropods. Clades 2 and 3 are the two major groups of dinosaurs—clade Saurischia and clade Ornithischia. Finally, clade 5 is clade Dinosauria—the dinosaurs. Numbers 1 and 5 have been done for you. Use the "Visualize It" tool below.

DNA, Hot Pockets, & The Longest Word Ever: Crash Course Biology #11

Triceratops belongs to two of the marked clades on this tree: 4 and 5. This means that Triceratops is both an ornithischian clade 4 and a dinosaur clade 5. Which clades do birds belong to? Page 2 of 4. But how can that be? There are no T.

Use your answer to part b to explain why birds are dinosaurs.This question set on Evolution consists of 15 questions in MCQ format.

Ecological adaptations in which some organisms are favored due to more energy investment on their reproductive rate while other on the basis of channelizing energy for homeostasis. Such a selection strategy is termed as:. A group of organisms believed to comprise all the evolutionary descendants of a common ancestor is called:.

Among the following which molecule has been frequently used in the molecular systematics of animals? A behavior of animal by conspicuously recognizable markings that serve to warn the others about potential predators that would come from attacking or eating them is called:.

Certain species of birds shows variation in beak size only when they are sympatric. This is an example of:. The term used for the bubble-like structure generated during the early process of origin of the life by Oparin is:.

You have reached at the End of this Quiz. This set of practice questions will help to build your confidence in Evolution to face the real examination. You may also like…. Biology MCQ. Do you have any Queries? Please leave me in the Comments Section below. I will be Happy to Read your Comments and Reply. More Evolution MCQs.

Browse more in Easy Biology Class…. Your email address will not be published. Skip to content. The adaptation related to high altitude is: The increase in RBC count. Decrease in the affinity for oxygen by hemoglobin.

The decrease in RBC count. Increase in the affinity for oxygen by hemoglobin. Which statement is NOT true regarding the genetic drift as an evolutionary force: Variation in the relative frequency of genotypes.

The chance of disappearance of genes. Small population size. Population bottle-neck. Genes between related organisms exhibit high variation. The variations would maximally occur in: Introns. Polyadenylation sites.

the evolution lab answer key 2

Such a selection strategy is termed as: K-selection and r-selection. Directional and disruptive selection. Logistic and exponential selection.


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