. (07.07 HC)Darwin explored the Galapagos Islands and observed variations of certain species. Forexample, he saw that the mockingbirds on three different islands were distinct but stillsimilar to the mockingbirds found on the mainland. The level of diversity in anecosystem can be determined by the frequency of speciation and extinction. (8 points)a. Describe speciation and identify two possible prezygotic barriers of themockingbirds that contribute to speciation.b. If the mockingbirds became extinct, explain how this could lead to adaptiveradiation. Σ19. (07.05 MC)Which of the following best describes evidence from biochemistry that a geneticiststudying evolutionary relationships might use to determine that two species are notclosely related? (4 points)Each species has a different reproductive mechanism.One species has genetic material that contains different nucleotides.Similar gene sequences in each species code for different proteins.○ The two species have different numbers of chromosomes.

Detailed explanation: 1. Each species has a different reproductive mechanism: This relates to…

Answered: . (07.07 HC) Darwin explored the…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Similar questions

Below is a cartoon depicting various geological events, starting with one large island (panel 1) and ending with four smaller islands sequentially splitting off from each other (panels 2 to 5). Initially, there was only Species A inhabiting on the big island. However, as time went on, more species evolved on these smaller islands, such that at the current time (panel 5), there are five species. Their phylogenetic relationships are shown on the last panel. 1 2 evelves into species 3 4 velves ite evolres nto A 5. 2 D] A Based on the history depicted, MOST of these speciation events are likely mediated through? the sympatric speciation process the reinforcement process the dispersal and colonization process the vicariance process the hybridization process
3.4
Answer the following biology questions on evolution
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.
1. In island radiations we often see the following pattern: similar forms found in different species living in similar habitats on different islands. This pattern raises the question: did the form evolve once on a single island in a single species and then spread to multiple islands by dispersal (let’s call this the “dispersal model”)? Or did a single species first disperse to different islands, then ecologically adapt to the many different environments on each (let’s call this the “convergence model”)? A phylogeny can help us identify which of these processes is at play. Considering the three traits shown on this tree, which model appears to have more support: the dispersal model or the convergence model? Explain how you arrived at this conclusion.
1. In island radiations we often see the following pattern: similar forms found in different species living in similar habitats on different islands. This pattern raises the question: did the form evolve once on a single island in a single species and then spread to multiple islands by dispersal (let’s call this the “dispersal model”)? Or did a single species first disperse to different islands, then ecologically adapt to the many different environments on each (let’s call this the “convergence model”)? A phylogeny can help us identify which of these processes is at play. Considering the three traits shown on this tree, which model appears to have more support: the dispersal model or the convergence model? Explain how you arrived at this conclusion.
A. What kind of speciation do we normally associate with members from one population being geographically displaced to a new, smaller population? Geospiza scandens B. What kind of speciation do we normally associate with members of a population that become ecologically, genetically or behaviorally distinct within that population such that they become reproductively isolated?
Consider two species that diverged whilegeographically separated but resumed contactbefore reproduction isolation was complete. Predictwhat would happen over time if two species matedindiscriminately and a. hybrid offspring survived and reproducedmore poorly than offspring from intraspecificmating or b. hybrid offspring survived and reproduced aswell as offspring from intraspecific mating.Provide an example for each to illustrate yourpoint.
Name two events that must happen for both allopatric speciation and sympatric speciation to occur.
A small number of lizards from a mainland population have been deposited on four isolated islands because of the effects of a rare strong storm. Which of the following best predicts the outcome of these lizards reproducing for many generations on the islands? * The isolation prevents gene flow; thus, the lizards on different islands experience prezygotic isolation. The different species that currently exist are the result of hybridization between lizards from different islands. Speciation results from bottleneck events that happened before the ancestral species reached the islands. Courtship rituals specific to each island lizard species prevent the lizards from interbreeding.
Explain 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.
3.7

SEE MORE QUESTIONS

Recommended textbooks for you

Human Anatomy & Physiology (11th Edition)

Biology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Biology 2e

Biology

ISBN:

9781947172517

Author:

Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:

OpenStax

Anatomy & Physiology

Biology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Human Anatomy & Physiology (11th Edition)

Biology

ISBN:

9780134580999

Author:

Elaine N. Marieb, Katja N. Hoehn

Publisher:

PEARSON

Biology 2e

Biology

ISBN:

9781947172517

Author:

Matthew Douglas, Jung Choi, Mary Ann Clark

Publisher:

OpenStax

Anatomy & Physiology

Biology

ISBN:

9781259398629

Author:

McKinley, Michael P., O'loughlin, Valerie Dean, Bidle, Theresa Stouter

Publisher:

Mcgraw Hill Education,

Molecular Biology of the Cell (Sixth Edition)

Biology

ISBN:

9780815344322

Author:

Bruce Alberts, Alexander D. Johnson, Julian Lewis, David Morgan, Martin Raff, Keith Roberts, Peter Walter

Publisher:

W. W. Norton & Company

Laboratory Manual For Human Anatomy & Physiology

Biology

ISBN:

9781260159363

Author:

Martin, Terry R., Prentice-craver, Cynthia

Publisher:

McGraw-Hill Publishing Co.

Inquiry Into Life (16th Edition)

Biology

ISBN:

9781260231700

Author:

Sylvia S. Mader, Michael Windelspecht

Publisher:

McGraw Hill Education

SEE MORE TEXTBOOKS