Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 22, Problem 10TYK
Summary Introduction
To review:
Human populations often differ in external morphological characteristics. The basis on which all the human populations are classified as a single species is to be mentioned.
Introduction:
The binomial name for a human being is Homo sapiens. They are present on the earth from approximately 1.9-0.4 million years. The human being is a biological and biosocial organism. Human beings are characterized by their erect posture and their bipedal locomotion.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
Create a Concept Map for the following:
Use each of the following species concepts to write a claim about whether the dark and light fur mice are, in fact, different species. Your claim should demonstrate your understanding of that particular species concept.
Mice with light coat colors are found in populations scattered across the southeastern US. Researchers believe the light coat color emerged in a single population.
How would a biologist explain the evolution of the light coat color in populations across the southeastern US? Briefly explain your reasoning.
How do mechanisms of speciation, such as genetic isolation, reproductive barriers, and ecological factors, apply to the human-chimp-gorilla trichotomy?
Discuss the role of these mechanisms in driving speciation and shaping the evolutionary relationships among humans, chimps, and gorillas, based on genetic evidence such as comparative genomics and molecular phylogenetics.
Chapter 22 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 22.1 - How do the morphological, biological, and...Ch. 22.1 - What is clinical variation?Ch. 22.2 - What is the difference between prezygotic and...Ch. 22.2 - Prob. 2SBCh. 22.3 - Prob. 1SBCh. 22.3 - Why might insects from different host races be...Ch. 22.4 - Prob. 1SBCh. 22.4 - Prob. 2SBCh. 22 - The biological species concept defines species on...Ch. 22 - Prob. 2TYK
Ch. 22 - A characteristic that exhibits smooth changes in...Ch. 22 - Prezygotic is isolating mechanisms: a. reduce the...Ch. 22 - In the model of allopatric speciation, the...Ch. 22 - Prob. 6TYKCh. 22 - If two species of holly (genus Ilex) flower during...Ch. 22 - Prob. 8TYKCh. 22 - An animal breeder, attempting to cross a llama...Ch. 22 - Prob. 10TYKCh. 22 - Apply Evolutionary Thinking How do human...Ch. 22 - Prob. 12TYKCh. 22 - Prob. 13TYKCh. 22 - Prob. 14TYKCh. 22 - Prob. 15TYKCh. 22 - David Hills of Baylor University noted that three...
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
- What data would suggest that a species evolutionary history includes sexual selection as a mechanism that helped shape the species? If males and females are significantly different from each other (sexual dimporphism) If males and females form different social groups (i.e. herds are formed from either males or females but not both) If some males reproduce with multiple females while other males do not reproduce If males engage in "risky" behaviorarrow_forwardHumans often survive beyond their childbearing years, which is unique among primates. The grandmother hypothesis states that human longevity beyond childbearing years is selected for because grandmothers benefit the children of their offspring. This effectively increases survivorship of the offspring of their offspring (two generations into the future). Assuming that human longevity also has a cost, e.g. reduced fecundity (number of offspring), which of the following would most likely produce selection for longer lives? (Not required, but if you are interested see this popular press story about the "evolution" of this hypothesis: http://www.theatlantic.com/health/archive/2012/10/the-evolutionary-importance-of- grandmothers/264039/ 2 ) Selection only occurs if females, and not males, have extended lives, that is why males have a shorter life expectancy O Human grandmothers must only nurture their own children and not their grandchildren O Increased survival in grandchildren due to…arrow_forwardPlease provide abd explain four example of hybrid zone in animals . How large is the area of hybridization. What prezygotic isolating mechanism prevent the species from interbreeding outside the hybrid zone. is the frequency of hybrid matings increasing or decreasing through time.arrow_forward
- Species Concepts Review The Baltimore Orioles and Black-backed Orioles species complex has conflicting evidence in support of each being their own species and in support of them being the same species. Review the evidence below for each hypothesis, then, using that evidence, explain whether they should be classified as distinct or the same species based on each species concept. Then, using the overall evidence, decide whether to classify them as the same or different species. Genetic Information (In the Species Concepts lab, we used a "controversial" 10% cutoff. A more realistic cutoff might be 1%. Let's use a 1% cutoff for this activity.) Sequence Differences Baltimore Oriole vs Black- backed Oriole Cytochrome b 0.26% Control region 0.74% 2A. Based on the genetic information above, should the Baltimore Oriole and Black-backed Oriole be classified as one species or two species?arrow_forwardWhich one of the following traits is not shared by most model species? A. High fecundity B. Short generation time C. Ease of maintaining populations in a lab environment D. Exhibit traits that are relevant to human biomedical science E. Developmental fate of each cell has been mapped from embryo to adultarrow_forward1) in the future there may be more than one species of ostrich ? True or false 2)There is evidence of gene flow in the cassowary ? True or falsearrow_forward
- You want to distinguish between two hypotheses to explain the patterns you see: 1) Males not feeding the young is an adaptation to dimorphism 2) If males don't feed the young in a species, it will allow them to become brightly colored To begin to address this question, map the characters changes in dimorphism and males feeding the young onto each of the trees on the previous page. CHARACTER SEXUAL DIMORPHISM MALES FEED YOUNG Cassin's Vireo No No Red Fox Sparrow Cape May Warbler Cedar Waxwing Golden-Crowned Kinglet Pyrrhuloxia Yes No No No No Yes No Yes Yes No California Gull No Yes Note: This data is fictional 5) Which of the hypotheses in part 4 is consistent with your analysis? Explain why in a brief paragraph.arrow_forwardAlso provide examplesarrow_forwardIn the model shown below, discuss what kind of geographic barriers would have led to the finch speciation in the Galapagarrow_forward
- One of Darwin’s finches, the medium ground finch (Geospiza fortis), is found on the small island of Daphne Major. These finches are seedeating birds. A major drought occurred on the island in 1977. Following the drought, the average beak size of medium ground finches had increased about 3%–4%. Why might a drought lead to an evolutionary change in beak size? Propose a hypothesis and explain how you could go about testing it.arrow_forwardSince Western and Eastern meadowlarks are similar in appearance, one could assume that both are members of the same species. However, the Western meadowlark sings a song that is distinct from the Eastern meadowlark, preventing the two from mating. Therefore, one could also assume that Western and Eastern meadowlarks each represent their own species. Identify which concepts characterize both assumptions. answer for both of themarrow_forwardIf the phylogenetic species concept (PSC) were used to define species, rather than the biological species concept (BSC), how might that change the estimates of species diversity (numbers of species) on a worldwide basis? True or False: Estimates of species diversity are likely to change if the PSC is used. In particular, one would expect the number of species to increase. This is because individuals from divergent allopatric populations that can potentially interbreed would belong to the same species under the BSC. These same organisms would be classified as members of different species under the PSC.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 LearningBiology: 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
Mendelian Genetics and Punnett Squares; Author: Professor Dave Explains;https://www.youtube.com/watch?v=3f_eisNPpnc;License: Standard YouTube License, CC-BY
The Evolution of Populations: Natural Selection, Genetic Drift, and Gene Flow; Author: Professor Dave Explains;https://www.youtube.com/watch?v=SRWXEMlI0_U;License: Standard YouTube License, CC-BY