**Transcription and Explanation for Educational Website** **Question 12:** Currently, the only predators of Galápagos marine iguanas are Galápagos hawks. Iguana body size is not correlated with risk of hawk predation, although small iguanas can sprint faster than large iguanas. If predators (e.g., cats) that preferentially catch and eat slower iguanas are introduced to the island, iguana body size is likely to ________ in the absence of other factors; the iguanas would then be under ________ selection. A) increase; directional B) increase; disruptive C) decrease; directional D) decrease; disruptive E) stay the same; stabilizing **Question 13:** Large male horned dung beetles, *Onthophagus taurus*, use their horns as weapons in fights with rival males over ownership of breeding tunnels containing females. Females excavate tunnels beneath fresh dung piles where they mate with the males, and then lay their eggs. The use of the horns by the males in contest for the breeding tunnels is an example of: I: intersexual selection II: intrasexual selection III: sexual selection A) I and II B) II and III C) I and III D) I, II and III **Question 14: Explanation of Diagram** The diagram is a map showing the relative ages of the Hawaiian Islands, from oldest to youngest: - Kauai: 5.1 million years - Oahu: 3.7 million years - Molokai: 1.3 million years - Maui: 0.8 million years - Hawaii: 0.4 million years These ages indicate the order of formation of the islands, with Kauai being the oldest and Hawaii the youngest. Soon after the island of Hawaii rose above the sea surface (somewhat less than 1 million years ago) and organisms colonized the island, the evolution of life on this new island should have been most strongly influenced by ________. A) a genetic bottleneck B) sexual selection C) habitat differentiation D) founder effects This transcription and explanation are provided to enhance understanding of evolutionary processes and selection types through examples from Galápagos iguanas and Hawaiian island formation.
**Transcription and Explanation for Educational Website** **Question 12:** Currently, the only predators of Galápagos marine iguanas are Galápagos hawks. Iguana body size is not correlated with risk of hawk predation, although small iguanas can sprint faster than large iguanas. If predators (e.g., cats) that preferentially catch and eat slower iguanas are introduced to the island, iguana body size is likely to ________ in the absence of other factors; the iguanas would then be under ________ selection. A) increase; directional B) increase; disruptive C) decrease; directional D) decrease; disruptive E) stay the same; stabilizing **Question 13:** Large male horned dung beetles, *Onthophagus taurus*, use their horns as weapons in fights with rival males over ownership of breeding tunnels containing females. Females excavate tunnels beneath fresh dung piles where they mate with the males, and then lay their eggs. The use of the horns by the males in contest for the breeding tunnels is an example of: I: intersexual selection II: intrasexual selection III: sexual selection A) I and II B) II and III C) I and III D) I, II and III **Question 14: Explanation of Diagram** The diagram is a map showing the relative ages of the Hawaiian Islands, from oldest to youngest: - Kauai: 5.1 million years - Oahu: 3.7 million years - Molokai: 1.3 million years - Maui: 0.8 million years - Hawaii: 0.4 million years These ages indicate the order of formation of the islands, with Kauai being the oldest and Hawaii the youngest. Soon after the island of Hawaii rose above the sea surface (somewhat less than 1 million years ago) and organisms colonized the island, the evolution of life on this new island should have been most strongly influenced by ________. A) a genetic bottleneck B) sexual selection C) habitat differentiation D) founder effects This transcription and explanation are provided to enhance understanding of evolutionary processes and selection types through examples from Galápagos iguanas and Hawaiian island formation.
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,...
Related questions
Concept explainers
Gene Flow
Gene flow, also known as gene migration, is the introduction of genetic material from a particular population to another population of the same species through interbreeding. For example, a bee facilitates its reproductive process by carrying pollen from one flower to another. The flow alters the composition of the gene pool of the receiving population. It introduces new alleles within the population and helps increase variability. This exchange of genetic material occurs through reproduction and brings about new combinations of traits into the population. Where human beings are concerned, actual migration of populations, whether voluntary or forced, brings about gene flow.
Population Biology
Population biology is the study of patterns in organism populations, specifically the growth and management of population size, population genetics, the evolution of life history, species interactions, and demography.
Speciation
The process of speciation involves the formation of new species during evolution. The new species evolve in such a way that both new and old species are not able to interbreed. Thus, speciation occurs when few members of one species get separated from the main species due to geographical, mechanical, or reproductive isolation. These separated members develop new traits that make them different from the main species. In other words, speciation could be defined as the absence of gene flow between two populations that become new species.
Allele Fixation
A gene is a unit of heredity and contains both physical and functional information that shapes an individual. Genes are made up of DNA (deoxyribonucleic acid), which carry genetic information from one generation to another, from one set of parents to their offspring, and so on. Every cell in a human body, or any living organism, has the same DNA, which implies that every cell in an individual’s body has all the information it needs to build and sustain the body!
Question
Transcribed Image Text:**Transcription and Explanation for Educational Website**
**Question 12:**
Currently, the only predators of Galápagos marine iguanas are Galápagos hawks. Iguana body size is not correlated with risk of hawk predation, although small iguanas can sprint faster than large iguanas. If predators (e.g., cats) that preferentially catch and eat slower iguanas are introduced to the island, iguana body size is likely to ________ in the absence of other factors; the iguanas would then be under ________ selection.
A) increase; directional
B) increase; disruptive
C) decrease; directional
D) decrease; disruptive
E) stay the same; stabilizing
**Question 13:**
Large male horned dung beetles, *Onthophagus taurus*, use their horns as weapons in fights with rival males over ownership of breeding tunnels containing females. Females excavate tunnels beneath fresh dung piles where they mate with the males, and then lay their eggs. The use of the horns by the males in contest for the breeding tunnels is an example of:
I: intersexual selection
II: intrasexual selection
III: sexual selection
A) I and II
B) II and III
C) I and III
D) I, II and III
**Question 14: Explanation of Diagram**
The diagram is a map showing the relative ages of the Hawaiian Islands, from oldest to youngest:
- Kauai: 5.1 million years
- Oahu: 3.7 million years
- Molokai: 1.3 million years
- Maui: 0.8 million years
- Hawaii: 0.4 million years
These ages indicate the order of formation of the islands, with Kauai being the oldest and Hawaii the youngest.
Soon after the island of Hawaii rose above the sea surface (somewhat less than 1 million years ago) and organisms colonized the island, the evolution of life on this new island should have been most strongly influenced by ________.
A) a genetic bottleneck
B) sexual selection
C) habitat differentiation
D) founder effects
This transcription and explanation are provided to enhance understanding of evolutionary processes and selection types through examples from Galápagos iguanas and Hawaiian island formation.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
Step by step
Solved in 3 steps
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.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