Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 23, Problem 15PIAT
PROCESS OF SCIENCE The data in the graphs are from two of the 22 forest fragments studied by the researchers: 7 with toucans present, 15 with toucans absent. Why do you think the researchers bothered to study so many forest fragments?
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
, make a diagram illustrating the evolution of a domesticated crop (preferably one that is cultivated or grown in your area). You may use any medium (crayons, colored pencils, etc.) which is readily available to you. Your output will be evaluated based on content (Does the diagram show information that is valuable and relevant to the theme?), organization (Does the diagram present information in a clear and orderly manner?), presentation (Are the layout and design of the diagram attractive and neat?) and graphics (Do the illustrations creatively and adequately support the information that the diagram intends to relay? Are the illustrations big enough to be identified from at least 1 meter away?).
You can use plants grown in pots in a growth chamber to investigate many ecological and evolutionary research questions. Identify an interesting ecological or evolutionary research question, then design an experiment to address this question using a plant system. To come up with your research question, think of questions related to topics covered in lecture. The following questions are very general, but might give you some ideas as you develop your own, more specific, question.• Which species in a group of species is the best intraspecific competitor?• Which species in a group of species is the best interspecific competitor? • Is the best intraspecific competitor also the best interspecific competitor?• Does competitive exclusion occur between two species with similar ecological niches?• Does the outcome of interspecific competition change in different environments, or is the best competitor always the best competitor under all environmental conditions?• Similar to the question above –…
A consortium of dairy and beef farmers has hired you to study the evolutionary origins of domestic cattle. They particularly want to know whether the humped zebu cattle of Asia and the cattle of Africa are derived from different species of wild cattle than European breeds. Outline a complete research program to study this question. Describe the sequence of steps you would need to do, what kind of data you would collect, and the methods you could use to evaluate possible trees and branches.
Chapter 23 Solutions
Biological Science (7th Edition)
Ch. 23 - PROCESS OF SCIENCE In what sense is the...Ch. 23 - 2. Why isn’t inbreeding considered an evolutionary...Ch. 23 - 4. True or false? Gene flow can either increase or...Ch. 23 - 6. In the 1700s and 1800s, royalty in Europe often...Ch. 23 - MODEL Draw a small concept map (BioSkllls 12 )...Ch. 23 - 9. QUANTITATIVE In humans, albinism is caused by...Ch. 23 - Prob. 10TYPSSCh. 23 - Are toucans important to tropical forests? Human...Ch. 23 - QUANTITATIVE Toucans can eat fruits with large...Ch. 23 - 13. Do these data illustrate directional,...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- GWhat question could be aske X GResearchers can geneticallys X ck X Flock Y Flock Z Total x XVT-FL-EOC-Biology 1 - Edger X genuity.com/Player/ Lab: Natural Selection Assignment: Reflect on the Lab Active Apply the Simulation to the Real World 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? * What is the effect of crop selection for pest resistance on the distribution of leaf size in a population of plants? O What is the effect of crop selection for pest resistance on the toughness of lettuce leaves? O What is the effect of crop selection for pest resistance on the sale of green salad in grocery stores? What is the effect of crop selection for pest resistance on the texture most preferred for consumption by…arrow_forwardA. Why do we need to test the null hypothesis instead of just proving an alternative hypothesis? B. You are testing the effect of a particular fertilizer on a plant's growth. Your control plants don't get fertilizer while your test plants do. What would be your hypotheses and the null hypotheses?arrow_forwardin Mouse Utopia Project Why did the mouse population end up extinct?arrow_forward
- Imagine that you wanted to know if speciation rate in plant groups is linked to whether the plants are pollinated by bees or hummingbirds. To do this, you identified 20 genera of angiosperms that contained species pollinated by both types of animals. There were substantially more species in the groups that were pollinated by bees. Which of the following conclusions are most consistent with your data? A. Hummingbirds promoted speciation less than did bees. B. Hummingbirds promoted speciation more than did bees. C. Each genus should first be split into two new genera. D. The rates of speciation are independent of pollinator type.arrow_forwardGreg is forming a hypothesis for a science experiment. His current hypothesis is: "How many hours of sunlight per day is best for dandelion flowers?" What is wrong with Greg's current hypothesis? (Choose all that apply) It should test a wider variety of flowers. It isn't written in the form of a statement. It doesn't provide enough evidence. It doesn't define an independent variable It is too broad, and not testable. It doesn't define a dependent variablearrow_forwardA. Define null hypothesis in your own words. B. What is thr poiny of having a null hypothesis? C. What is the alternative hypothesis? D. Why do we need to test the null hypothesis instead of just proving an alternative hypothesis? F. You are t. Esting the effect of a particular fertilizer onba plant's growth. Your control plants don't get fertilizer while your test plants do. Whatvwould be your hypotheses and the null hypotheses?arrow_forward
- What could the lengths of the branches on the x-axis represent? (choose all that apply, no partial credit) Choice 1 of 4:Time Choice 2 of 4:Size of species Choice 3 of 4:number of genetic change Choice 4 of 4:number of speciesarrow_forwardThe data presented in Part D shows the results of artificial selection for hairy Wisconsin Fast Plants. Identify the null hypothesis for this investigation? A. If the mean number of trichomes is greater in the second generation than in the parent population, then selection has occurred. B. There will be no difference between the mean number of trichomes in the second generation compared to the parent population. C. As a result of selection, the mean number of trichomes will be greater in the second generation. D. If plants with the most trichomes in the first generation are selected as parents, then the second generation will have more trichomes.arrow_forwardAloes vs. Agaves Describe 3 general similarities (analogous structures) you observed between Aloes & Agaves. Now, identify a specific example -- 1 Aloe species and 1 Agave species -- that look especially similar. List their names and clearly describe how they are alike. What environmental pressures likely drove the development of these similar traits? Explain. Now, what makes these two families different? Fill in the table below based on the lab’s video lecture or your personal observations: Geographic origin Flowers (stalk length, color) # of reproductive events Leaf characteristics Aloes Agavesarrow_forward
- Name: Date: Galapagos Finch Evolution (HHMI Biointeractive) - https://voutu be/mcM23M-CCog ~16 minutes 1. What is the "mystery of mysteries? 2. The Grants' study on the island of Daphne Major studied what organisms? 3. Where did the 13 species of finches on the islands come from? 4. How did the Grants catch the finches? 5. What features did they measure? 6. What happened in 1977 to the island? 7. What type of birds were more likely to survive after this event? 8. After the El Nino event in 1983, which birds were more likely to survive? 9. What keeps different species from mating on the Galapagos islands? 10. The most likely scenario explaining the different finches on the islands is that: a) different birds migrated to different islands b) one species evolved into many different species 11. Examine the graph below. Summarize what happened to the finch population between 1976 and 1978. 30 1976 Offspring 25- 20- 15- 10- 5- 7.3 7.8 8.3 8.8 9.3 9.8 10.3 10.8 11.3 40 1978 Offspring 30- 20-…arrow_forwardWhat is the difference between parapatric speciation and sympatric speciation?I understand that it has to do with habitat but I am having trouble conceptualizing the differences. A simplistic analogy or metaphor to help understand the differences would be very appreciated as I am a disabled student. Thank You.arrow_forwardFigure 1.15 Example of error bars in a graph. This graph was adapted from the peacock butterfly research described in Section 1.5. The researchers recorded the number of times each butterfly flicked its wings in response to an attack by a bird. The squares represent average frequency of wing flicking for each sample set of butterflies. The error bars that extend above and below the dots indicate the range of valuesthe sampling error. Figure It Out: What was the fastest rate at which a butterfly with no spots or sound flicked its wings?arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage Learning
Biology Today and Tomorrow without Physiology (Mi...
Biology
ISBN:9781305117396
Author:Cecie Starr, Christine Evers, Lisa Starr
Publisher:Cengage Learning
Ecology: Interspecific and Intraspecific Interactions | Ecology & Environment | Biology | FuseSchool; Author: FuseSchool - Global Education;https://www.youtube.com/watch?v=IiQTrA0-TE8;License: Standard YouTube License, CC-BY