BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 14, Problem 4WIO
Polyploidy is a common mechanism of
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Can you answer all the parts to this diagram
Species 1 and 2 are sister species from which you’ve cloned related genes. On the gene tree on the top of the next page, use labels to answer the following questions:
(a) Label the node that represents a gene duplication with “D,”
(b) Label the nodes that represent speciation events with “S,”
(c) Pick a pair of genes that are paralogs and label them both “P.”
(d) Pick a pair of genes that are orthologs and label them both “O.”
which statement is false?
1)In the context of the evolution of senescence, the aphorism "live fast and die young" means that organisms with a more risky behavior will have a shorter life span.
2)Allopatric speciation is a type of speciation process that takes place in different geographic locations.
In Figure 2 a diagram shows how traits are shared (or not shared) in different generations. Based on the diagram:
a. A, represents a plesiomorph trait. In how many generations is A shared (symplesiomorph)?
b. C represents an apomorphictrait. What generations share C (synapomorphy)?
c. E is considered an autapomorphic trait. Why do you think?
d. What about B and D? How do we classify them?
Chapter 14 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 14.1 - How are macroevolution and microevolution related?Ch. 14.1 - Prob. 2MCCh. 14.1 - What are some of the challenges in defining...Ch. 14.2 - Prob. 1MCCh. 14.2 - Write a real or fictitious example other than...Ch. 14.3 - Prob. 1MCCh. 14.3 - Prob. 2MCCh. 14.3 - Prob. 3MCCh. 14.4 - Prob. 1MCCh. 14.4 - Prob. 2MC
Ch. 14.5 - Prob. 1MCCh. 14.5 - Prob. 2MCCh. 14.5 - Prob. 3MCCh. 14.6 - Describe the taxonomic hierarchy.Ch. 14.6 - What are the strengths of a cladistics approach...Ch. 14.6 - Distinguish between ancestral and derived...Ch. 14 - Macroevolution is distinct from microevolution in...Ch. 14 - The biological species concept defines species...Ch. 14 - A mule is the offspring of a male donkey and a...Ch. 14 - Prob. 4MCQCh. 14 - Prob. 5MCQCh. 14 - Prob. 6MCQCh. 14 - Prob. 7MCQCh. 14 - Prob. 8MCQCh. 14 - Prob. 9MCQCh. 14 - Prob. 10MCQCh. 14 - How has the meaning of the term species changed...Ch. 14 - What type of reproductive barrier applies to each...Ch. 14 - Prob. 3WIOCh. 14 - Polyploidy is a common mechanism of speciation in...Ch. 14 - How does natural selection predict a gradualistic...Ch. 14 - Prob. 6WIOCh. 14 - Examine the cladogram in figure 14.17 and answer...Ch. 14 - Prob. 8WIOCh. 14 - Prob. 9WIOCh. 14 - Prob. 1SLCh. 14 - Prob. 1PITCh. 14 - Prob. 2PITCh. 14 - Prob. 3PIT
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
- A genome duplication event, creating a tetraploid plant from a diploid parent plant, can sometimes result in the creation of a new species. This type of speciation is called allopatric adaptive radiation sympatric gradual speciation Which of the following is an example of a postzygotic barrier? Hybrid offspring of two species of jimsonweeds always die before reproducing One plant lives on acid soil, the other on alkaline soil. Two species of leopard frogs have different mating calls Mallard and pintail ducks mate at different times of the year Pollen of one species of tobacco cannot fertilize a different species of tobacco.arrow_forwardIn sexually reproducing species, each individual begins life with DNA inherited from both parent organisms. , Apply this idea to what occurs when organisms of two species that have homologous chromosomes mate and produce ( F1 ) hybrid offspring. What percentage of the DNA in the F1 hybrids' chromosomes comes from each parent species? As the hybrids mate and produce F2 and later-generation hybrid offspring, describe how recombination and natural selection may affect whether the DNA in hybrid chromosomes is derived from one parent species or the other.arrow_forwardWhat taxa has the least number of speciation events and how many speciation events are there in total (the whole tree)?arrow_forward
- Compare the forms of speciation that are slow to those that occur more rapidly. Make a list of the slow and fast forms. With regard to mechanisms of genetic change, what features do slow and rapid speciation have in common? What features are different?arrow_forwardThe biological species concept depends on the existence of barriers to reproduction. What are they? Does this species concept apply in all situations? Think of an example from nature where the biological species concept would NOT be that applicable. Which species concept would be better in this example? How does speciation occur? What environmental factors might contribute to speciation? Can an individual speciate? Use terminology for the two kinds of speciation we have learned about. What is “gene flow”? What does it mean if there is NO gene flow? Two groups of individuals are separated by either side of a canyon. One researcher found that they do not cross the canyon at any point. The group on the north side have fluffy tails and thicker coats, and they do not eat moss. The south side individuals eat moss almost exclusively, have a thin coat and tail, but otherwise are generally identical. When in the lab they mated successfully, and the offspring of that mating also mated…arrow_forwardSpecies A has 2 n = 10 chromosomes. Species B has 2 n = 40 chromosomes. On average, will two randomly selected genes from species A be more likely, less likely, or equally likely to assort independently than two randomly selected genes from species B? Explain your reasoning.arrow_forward
- What is speciation? List any two events that lead to speciation?arrow_forwardPolyploidy is very common in flowering plants: approximately 40% of all flowering plant species are polyploids. Although polyploidy exists in many different animal groups, it is much less common. Why is polyploidy more common in plants than in animals? Give one or more possible reasons.arrow_forwardThe biological species concept is based on the assumption that species are reproductively isolated and do not share genes. And yet a number of organisms that are considered different species hybridize (mate and exchange genes). Hybridization between different species is more common in plants than in animals. Propose some possible reasons for this difference.arrow_forward
- Define speciation genes. and What is the importance of speciation genes?arrow_forwardPlant species A has a diploid chromosome number of 12. Plantspecies B has a diploid number of 16. A new species, C, arises asan allopolyploid from A and B. The diploid number for speciesC would probably be(A) 14. (B) 16. (C) 28. (D) 56.arrow_forwardExplain the type of speciation (allopatric, parapatric, or sympatric) most likely to occur under each of the following conditions: A. A pregnant female rat is transported by an ocean liner to a new continent. B. A meadow containing several species of grasses is exposed to a pesticide that promotes nondisjunction. C. In a very large lake containing several species of fish, the water level gradually falls over the course of several years. Eventually, the large lake becomes subdivided into smaller lakes, some of which are connected by narrow streams.arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Biology (MindTap Course List)BiologyISBN:9781337392938Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. BergPublisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)BiologyISBN:9781305389892Author:Peter J. Russell, Paul E. Hertz, Beverly McMillanPublisher:Cengage Learning
Biology (MindTap Course List)
Biology
ISBN:9781337392938
Author:Eldra Solomon, Charles Martin, Diana W. Martin, Linda R. Berg
Publisher:Cengage Learning
Biology: The Dynamic Science (MindTap Course List)
Biology
ISBN:9781305389892
Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher:Cengage Learning
Animal Adaptations for Kids, Learn about physical, life cycle, and behavioral adaptations of animals; Author: Learn Bright;https://www.youtube.com/watch?v=m2MibjJgyjs;License: Standard youtube license