Concept explainers
Introduction: Charles Darwin’s theory of evolution states that all organisms developed and raised from natural selection with some small changes and inherited variation that acquired by the organism to survive, compete, and reproduce.
Answer to Problem 1SQ
Correct answer: d. Parents get new traits through their actions and pass them to offspring.
Explanation of Solution
Reason for the correct answer:
Charles Darwin did not understand physical
Option d. is given as “Parents get new traits through their actions and pass them to offspring”.
Hence, the correct answer is option d.
Reasons for incorrect answers:
Option a. is given as “Earth is very old, and its past organisms are preserved as fossils”.
The statement of Darwin is true that ancestral organisms are preserved as fossils that gave the idea of the theory of evolution. Therefore, option a is incorrect.
Option b. is given as “physically similar organisms tend to be closely related”.
The statement of Darwin is true; the interrelated species are evolved from a common ancestor. Therefore, option b is incorrect.
Option c. is given as “organisms compete for limited
The statement of Darwin is true, in the natural selection of evolution, the organism that survived and competed become the survival of the fittest. Therefore, option c is incorrect.
Hence, options a., b., and c. are incorrect.
Charles Darwin was not able to state that the gene expression and environmental factors are the key cause of evolution.
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Chapter 2 Solutions
Our Origins: Discovering Physical Anthropology (Fourth Edition)
- Which situation would most likely lead to allopatric speciation? a. A flood causes the formation of a new lake. b. A storm causes several large trees to fall down. c. A mutation causes a new trait to develop. d. An injury causes an organism to seek out a new food source.arrow_forwardHumans are able to cause organisms to evolve through whichmechanism?a. artificial selectionb. natural selectionc. fitnessd. paleontologye. uniformitarianismarrow_forwardWhy was Jean Baptiste Lamarck wrong about the mechanism of evolution? A. Because giraffes haven't evolved in billions of years. B. Because individuals do not pass on any traits that they acquire during their lifetime. C. Because individuals can change their traits during their lifetime and pass on those traits to their offpsring. D. Because he misunderstood the structure of DNA.arrow_forward
- what has to happen successfully for evolution by natural selection to take place? a. Mutation b. Reproduction c. Migration d. Genetic driftarrow_forwardWhich sentence says true about evolutionary relationship of organisms? * a. DNA evidence shows that the giant pandas are more closely related to raccoons than bears. b. Scientist infer that the species with similar body structure and development patterns inherited many of the same genes from acommon ancestor.a c. Scientist never have to change their hypotheses about species relationships. d. Scientist can compare protein structure to determine how closely two species are related .arrow_forwardWhich is a question Lamarck MOST LIKELY would have asked when developing his evolutionary hypothesis? A. Is artificial selection the basis for evolution? B. Is evolutionary change the result of survival of the fittest? C. Can body structures change according to the actions of the organism? D. Can a small population size increase the rate of evolution?arrow_forward
- How do fossils provide evidence that evolution has happened on Earth? a. Fossils show that some species have gone extinct. b. Fossils show how life forms present today are different than those from the past. Fossils show how the sizes of certain animals has changed drastically over millions of с. years. d. Different sedimentary rock layers provide evidence for how the environment has changed over time.arrow_forwardWhy are humans so genetically similar within our species? A. Because humans evolved in multiple locations around the world at different times. B. Because humans evolved in one location (Africa) and we have existed as a species for very long time. C. Because humans evolved in one location (Africa) and we haven't existed as a species for very long. D. Humans are not very genetically similar to one another.arrow_forwardWhy are humans so genetically similar within our species? A. Humans are not very genetically similar to one another. B. Because humans evolved in one location (Africa) and we have existed as a species for very long time. C. Because humans evolved in multiple locations around the world at different times. D. Because humans evolved in one location (Africa) and we haven't existed as a species for very long.arrow_forward
- Darwin expressed that there was a force in nature that worked like an artificial selection. How is artificial selection different from Darwin's idea of natural selection? C.arrow_forwardccording to "The Complex Evolution of Homo sapiens", what is the significance of the L3 gene and who was the L3 woman? A.All individuals outside of Africa and who live in the Old World are descended from the L3 woman. B.All individuals within Africa are descended from the L3 woman. C.Only individuals within North and South America descended from the L3 woman. D.All individuals outside of Africa are descended from the L3 woman.arrow_forwardWhich claim about natural selection is not true? A. Directional selection decreases genetic diversity within a population B. Balancing selection (heterozygote advantage) maintains genetic diversity within a population C. Negative Frequency-Dependent selection maintains genetic diversity within a population D. Natural Selection always has a greater evolutionary effect in small populations than it does in large populationsarrow_forward
- Concepts of BiologyBiologyISBN:9781938168116Author:Samantha Fowler, Rebecca Roush, James WisePublisher:OpenStax College