Concept explainers
To decide:
Whether two groups of frogs should or should not be placed in the same species based on species concept and
Introduction:
It is not easy to define a species. Organisms that are different species according to one definition might be same species according to different definition. Definitions change as knowledge increases. The concept of species today is much different from what it was 100 years ago.
Answer to Problem 35A
Since the two groups of frogs are identical and are able to interbreed in the lab conditions, they should be placed in the same species. In nature they are unable to interbreed due to some physical barriers so they are reproductively isolated. Hence it would not be wrong to consider them as different species.
Explanation of Solution
Biologicalspecies concept is based on the similar characteristics and the ability to interbreed and produce fertile offspring. It was proposed by Theodosius Dobzhansky and Ernst Mayr. So the organisms that are able to reproduce successfully are defined as species as per this concept.
The two groups of frogs are able to interbreed in the laboratory and produce fertile offspring. In nature they are unable to interbreed due to different reproductive calls and non- overlapping territories. If they have distinct appearance or some minor physical differences, they may be considered to be different varieties of same species.
For speciation to occur, a population must diverge and then be reproductively isolated. Since the frogs are unable to interbreed in nature, they may be considered different species.
The molecular data consisting of DNA and RNA analysis would solve the problem correctly. By comparing their DNA sequences one can correctly decide whether the two groups of frogs should be placed in same species or not.
Chapter 17 Solutions
Biology Illinois Edition (Glencoe Science)
Additional Science Textbook Solutions
Introductory Chemistry (6th Edition)
Anatomy & Physiology (6th Edition)
Organic Chemistry (8th Edition)
Chemistry: An Introduction to General, Organic, and Biological Chemistry (13th Edition)
Genetic Analysis: An Integrated Approach (3rd Edition)
Laboratory Experiments in Microbiology (12th Edition) (What's New in Microbiology)
- DNK dagi nukleotidlar va undan sintezlangan oqsildagi peptid boglar farqi 901 taga teng bo'lib undagi A jami H boglardan 6,5 marta kam bo'lsa DNK dagi jami H bog‘lar sonini topingarrow_forwardOne of the ways for a cell to generate ATP is through the oxidative phosphorylation. In oxidative phosphorylation 3 ATP are produced from every one NADH molecule. In respiration, every glucose molecule produces 10 NADH molecules. If a cell is growing on 5 glucose molecules, how much ATP can be produced using oxidative phosphorylation/aerobic respiration?arrow_forwardIf a cell is growing on 5 glucose molecules, how much ATP can be produced using oxidative phosphorylation/aerobic respiration?arrow_forward
- Identify the indicated cavity (Fucus). a. antheridia b. conceptacel c. receptacle d. oogonium e. none of thesearrow_forwardIdentify the indicated structure (Saprolegnia). a. antheridium O b. oospore c.sperm d. auxospore e. tetraspore Of. zygosporearrow_forwardUsing information from the primary literature (several references have been provided as a starting point below) please answer the following question: Based on your review of the literature on rewilding, what are the major scientific pros and cons for rewilding? Please note that the focus of this assignment are the (biological) scientific issues associated with rewilding. As will be discussed in class, there are a number of non-scientific issues involved or implicated in rewilding, all ultimately affecting the public acceptability of rewilding. Although these issues are important – indeed, critical – in this assignment you should focus on the biological science issues and questions. Details: You must enumerate at least two pros and at least two cons. Your answer should be no more than 500 well-chosen words, excluding references. Think carefully about how best to organize and structure your answer. Aim for high information density: say a lot, but say it succinctly. Recall Nietzche’s…arrow_forward
- Using information from the primary literature (several references have been provided as a starting point below) please answer the following question: Based on your review of the literature on rewilding, what are the major scientific pros and cons for rewilding? Please note that the focus of this assignment are the (biological) scientific issues associated with rewilding. As will be discussed in class, there are a number of non-scientific issues involved or implicated in rewilding, all ultimately affecting the public acceptability of rewilding. Although these issues are important – indeed, critical – in this assignment you should focus on the biological science issues and questions. Details: You must enumerate at least two pros and at least two cons. Your answer should be no more than 500 well-chosen words, excluding references. Think carefully about how best to organize and structure your answer. Aim for high information density: say a lot, but say it succinctly. Recall Nietzche’s…arrow_forwardNow draw a rough sketch of what the control data might look like if in addition to the specific binding, there was also a considerable amount of nonspecific binding (again using a normal dose/response curve) (do % total bound ligand vs concentration)arrow_forwardWhat are functions of cuboidal cells in the kidney? Select all that apply. Concentration of gases Dilution of chemicals Secretion of molecules Nutrition to tissues Support of tissues Absorption of moleculesarrow_forward
- Human Anatomy & Physiology (11th Edition)BiologyISBN:9780134580999Author:Elaine N. Marieb, Katja N. HoehnPublisher:PEARSONBiology 2eBiologyISBN:9781947172517Author:Matthew Douglas, Jung Choi, Mary Ann ClarkPublisher:OpenStaxAnatomy & PhysiologyBiologyISBN:9781259398629Author:McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa StouterPublisher:Mcgraw Hill Education,
- Molecular Biology of the Cell (Sixth Edition)BiologyISBN:9780815344322Author:Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter WalterPublisher:W. W. Norton & CompanyLaboratory Manual For Human Anatomy & PhysiologyBiologyISBN:9781260159363Author:Martin, Terry R., Prentice-craver, CynthiaPublisher:McGraw-Hill Publishing Co.Inquiry Into Life (16th Edition)BiologyISBN:9781260231700Author:Sylvia S. Mader, Michael WindelspechtPublisher:McGraw Hill Education