Concept explainers
Introduction:
Darwin was concerned about finch’s species that was brought back by Beagle from the Galapagos Islands. Gould said that several finches ate small seeds, while others ate large fruits, insects, and seeds. Therefore, he illustrated 13 diverse forms of finch, where each was different from the birds that lived on the mainland, however, sharing certain characteristics.
Answer to Problem 1MCQ
Correct answer:
“Descent with modification” mean inherited traits change from generation to generation. Therefore, option b. is correct.
Explanation of Solution
Reason for the correct statement:
Darwin gave his idea that all of the finch groups that inhabited Galapagos had may be changed quickly from a single ancestral group of birds (finch) which had moved to the island searching for a relatively unengaged new habitat. Subsequently, after a few million years, the population of finch regularly branched in some way or the other. Each island represents distinct
Option b. is given as “Inherited traits change from generation to generation”.
As “change of inherited traits from generation to generation mean descent with modification” is the right answer.
Hence, option b. is correct.
Reasons for the incorrect statements:
Option a. is given as “Populations that change quickly is likely to become extinct”.
Darwin coined that regular changes in an inherited type lead to the descent with modification. So, it is a wrong answer.
Option c. is given as “Tracing an evolutionary tree from top to bottom reveals changes in species diversity”.
Tracing an evolutionary tree from top to bottom reveals changes in species diversity that does not mean descent with modification. So, it is a wrong answer.
Option d. is given as “Parents change their own feature before passing them on to offspring”.
Parents change their own feature before passing them on to offspring is not correct in case of descent with modification. So, it is a wrong answer.
Hence, options a., c., and d. are incorrect.
The statement “descent with modification” means that rapid changes occurred from an ancestral type or generation to generation.
Want to see more full solutions like this?
Chapter 12 Solutions
Biology: Concepts and Investigations
- How is a protein destined for the Endoplasmic Reticulum (ER), imported into the ER? Be concise.arrow_forwardFind out about the organisations and the movements aimed at the conservation of our natural resources. Eg Chipko movement and Greenpeace. Make a project report on such an organisation.arrow_forwardWhat are biofertilizers and mention the significancearrow_forward
- PCBs and River Otters: Otters in Washington State’s Green-Duwamish River have high levels of polychlorinated biphenyls (PCBs) in their livers. PCBs can bind to the estrogen receptors in animals and disrupt the endocrine system of these otters. The PCBs seem to increase the estrogen to androgen ratio, skewing the ratio toward too much estrogen. How would increased estrogen affect the river otter population? Based on your reading of the materials in this unit, what factors can affect fertility in humans? Explain how each of the factors affecting human fertility that you described can disrupt the human endocrine system to affect reproduction.arrow_forwardOther than oil and alcohol, are there other liquids you could compare to water (that are liquid at room temperature)? How is water unique compared to these other liquids? What follow-up experiment would you like to do, and how would you relate it to your life?arrow_forwardSelection of Traits What adaptations do scavengers have for locating and feeding on prey? What adaptations do predators have for capturing and consuming prey?arrow_forward
- Competition Between Species What natural processes limit populations from growing too large? What are some resources organisms can compete over in their natural habitat?arrow_forwardSpecies Interactions Explain how predators, prey and scavengers interact. Explain whether predators and scavengers are necessary or beneficial for an ecosystem.arrow_forwardmagine that you are conducting research on fruit type and seed dispersal. You submitted a paper to a peer-reviewed journal that addresses the factors that impact fruit type and seed dispersal mechanisms in plants of Central America. The editor of the journal communicates that your paper may be published if you make ‘minor revisions’ to the document. Describe two characteristics that you would expect in seeds that are dispersed by the wind. Contrast this with what you would expect for seeds that are gathered, buried or eaten by animals, and explain why they are different. (Editor’s note: Providing this information in your discussion will help readers to consider the significance of the research).arrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax CollegeBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage LearningHuman Heredity: Principles and Issues (MindTap Co...BiologyISBN:9781305251052Author:Michael CummingsPublisher:Cengage Learning