![Campbell Biology (11th Edition)](https://www.bartleby.com/isbn_cover_images/9780134093413/9780134093413_largeCoverImage.gif)
Concept explainers
(a)
To identify: The species concept(s) that can be applied to sexual and asexual species both.
Concept introduction:
The word “species” has been defined differently on the basis of three main species concepts namely; “Biological Species Concept”, “Morphological species Concept”, and “Ecological Species Concept”. According to the “Biological species concept”, a group of population with interbreeding members to produce viable fertile offspring is called species. Human beings are one of the best examples of biological species concept as they belong to the same species. In the “morphological species concept”, the species can be differentiated by their body shapes and other structural features whereas; in the “ecological species concept” the species can be defined by their ecological niche.
(b)
To explain: The most useful concept to identify species in the field.
Concept introduction:
The word “species” has been defined differently on the basis of three main species concepts namely; “Biological Species Concept”, “Morphological species Concept”, and “Ecological Species Concept”. According to the “Biological species concept”, a group of population with interbreeding members to produce viable fertile offspring is called species. Human beings are one of the best examples of biological species concept as they belong to the same species. In the “morphological species concept”, the species can be differentiated by their body shapes and other structural features whereas; in the “ecological species concept” the species can be defined by their ecological niche.
![Check Mark](/static/check-mark.png)
Want to see the full answer?
Check out a sample textbook solution![Blurred answer](/static/blurred-answer.jpg)
Chapter 24 Solutions
Campbell Biology (11th Edition)
- What causes sexual dimorphism? Give some examples of sexually dimorphic species, and why you think that form of sexual dimorphism arose.arrow_forwardPlease use and cite any source(s) you can find to answer the following questions:1. List and describe the different ways in which species are defined.2. Explain how each of the following makes it difficult to clearly define a species: variation within aspecies, geographically isolated populations, asexual species, fossil organisms.3. List and describe the pre-zygotic barriers as well as the post-zygotic barriers.4. Explain why allopatric speciation would be less likely on an island close to a mainland than on a moreisolated island.arrow_forwardScientists studying reproduction compared three closely related species of bagworm moths. The reproductive methods for these species are given in the table. Which of the following research questions would provide additional information about the population level impacts of meiosis and sexual reproduction? A - How do the number of D. charlottae offspring compare with the number of S. rupicolella offspring? B - Do D. charlottae and S. rupicolella populations express greater genetic diversity than D. fennicella populations? C - Are the offspring of D. fennicella genetically unique compared to the offspring of D. charlottae and S. rupicolella? D - Does crossing-over in D. fennicella result in increased genetic variation compared to D. charlottae and S. rupicolella?arrow_forward
- give one species that is classified or exhibit the following: sex-role reversal show a photograph of it with its sexual traits (body stuctures, behavior, etc) and how these traits help their reproduction. explainarrow_forwardHow can be Palawan bearcat commonly known as Palawan binturong or asian bearcats speciated?arrow_forwardn which situation would it make sense to use the morphological species concept? When you are able to collect data about how individuals in your study use their habitat, but you are unable to determine if they interbreed When working with fossils from extinct organisms When you only have genetic data about each organism in your study When you are not able to collect data about how individuals in your study use their habitat, but you are able to collect reproductive dataarrow_forward
- Interspecific hybrids, if they survive, are (a) always sterile (b) always fertile (c) usually sterile (d) usually fertile (e) never sterilearrow_forwardIn C. elegans there are two sexes: hermaphrodite and male. Sex is determined by the ratio of X chromosomes to haploid sets of autosomes (X/A). An X/A ratio of 1.0 produces a hermaphrodite (XX), and an X/A ratio of 0.5 results in a male (XO). In the 1970s, Jonathan Hodgkin and Sydney Brenner carried out genetic screens to identify mutations in three genes that result in either XX males (tra-1, tra-2) or XO hermaphrodites (her-1). Double-mutant strains were constructed to assess for epistatic interactions between the genes (see table). Propose a genetic model of how the her and tra genes control sex determination.arrow_forwardSwordtails, platyfish and Poecilia species are incapable of interbreeding with each other but swordtail species 1 can produce viable hybrids with swordtail species 2. In addition, both Poecilla fish, platyfish, and swordtails can all be distinguished genetically, but swortail species 1 and 2 cannot be genetically distinguished. Using this information indicate how many distinct 1) Biological, 2) morphological, and 3) phylogenetic species would be found in this group of fish. If you cannot determine this for any of the 3 species categories, state what you would need to know in order to do so. Edit View Insert Format Tools Table 12pt v Paragraph v BIUAv er Tv: 1. There are four 2.arrow_forward
- PLEASE ANSWER THE QUESTION AND EXPLAIN SUCCINTLY IN 2 SENTENCESarrow_forwardIs sexual reproduction required to generate the variability in structures and behaviors that is necessary for natural selection?arrow_forwardFor the species: Polyommatus eleniae Use this link : https://www.iucnredlist.org/species/173273/6983441 to answer the following What is known about the genus? Who discovered this species? When and where was your species first discovered? What makes your species a species (what is different about them, which character etc.)? What do we know about its distribution and habitat needs?arrow_forward
- Biology Today and Tomorrow without Physiology (Mi...BiologyISBN:9781305117396Author:Cecie Starr, Christine Evers, Lisa StarrPublisher:Cengage LearningBiology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
![Text book image](https://www.bartleby.com/isbn_cover_images/9781305117396/9781305117396_smallCoverImage.gif)
![Text book image](https://www.bartleby.com/isbn_cover_images/9781337392938/9781337392938_smallCoverImage.gif)