Evolutionary thoughts – Lamarck, Darwin, synthesis - Question Bank

1. The modern evolutionary synthesis reconciled Darwinism with genetics by demonstrating that:
A) Natural selection acts on discrete units of inheritance (genes).
B) Acquired characteristics are the primary source of variation.
C) Evolutionary change is solely due to random mutation.
D) Species remain unchanged over time.
2. The evolutionary thought of Jean-Baptiste Lamarck is characterized by:
A) The concept of gene pools and allele frequencies.
B) The principle of natural selection acting on variations.
C) The idea that acquired characteristics are heritable.
D) The study of genetic mutations.
3. Which statement best reflects the core idea of Darwin's theory of natural selection?
A) Organisms evolve because they need to.
B) Evolution is a process of inheritance of acquired traits.
C) Individuals with traits better suited to their environment are more likely to survive and reproduce, passing those traits on.
D) Evolution occurs through sudden, large-scale genetic changes.
4. The modern evolutionary synthesis provided a robust explanation for evolution by combining Darwin's theory of natural selection with:
A) Lamarck's inheritance of acquired characteristics.
B) Mendelian genetics and the concept of mutation.
C) The idea of a 'Great Chain of Being'.
D) Catastrophism.
5. Darwin's theory of evolution is supported by evidence from which of the following fields?
A) Paleontology, comparative anatomy, embryology, and biogeography
B) Astrology and alchemy
C) Purely theoretical mathematics
D) The study of ancient myths
6. Lamarck's theory proposed that evolution was:
A) A random process with no direction.
B) A gradual process driven by adaptation to immediate environmental needs.
C) A process primarily driven by genetic mutations.
D) A process limited to the survival of the fittest.
7. The integration of population genetics into evolutionary theory, a key aspect of the modern synthesis, allowed for:
A) Explaining the origin of life from non-living matter.
B) Quantifying evolutionary changes in terms of allele frequencies.
C) Disproving Darwin's theory of natural selection.
D) Ignoring the role of mutation in evolution.
8. Darwin's theory of natural selection relies on the existence of:
A) Uniform individuals within a population
B) Heritable variation within a population
C) Acquired characteristics being passed to offspring
D) A directed force guiding evolution
9. The idea that organisms have an 'inherent drive towards complexity' was a concept associated with:
A) Charles Darwin
B) Gregor Mendel
C) Jean-Baptiste Lamarck
D) Alfred Russel Wallace
10. The modern evolutionary synthesis is a robust framework that explains evolution through the interplay of:
A) Natural selection, genetic drift, mutation, and gene flow
B) Inheritance of acquired traits and use/disuse of organs
C) Spontaneous generation and vitalism
D) Artificial selection and directed evolution
11. Darwin's theory of natural selection predicts that over time, populations will become:
A) Less adapted to their environment
B) More suited to their environment
C) More genetically diverse without regard to environment
D) Less genetically diverse due to lack of variation
12. Which of the following statements best represents Lamarck's view on evolution?
A) Evolution is driven by random mutations and natural selection.
B) Organisms adapt to their environment by acquiring traits through use and disuse, which are then inherited.
C) Species evolve through a process of gradual accumulation of advantageous genetic variations.
D) Evolutionary change occurs through catastrophic events.
13. The 'synthesis' in evolutionary synthesis was a process of reconciliation between Darwin's theory and:
A) Geological principles of uniformitarianism
B) Early theories of genetics and mutation
C) The concept of spontaneous generation
D) The fixity of species
14. Darwin's theory of evolution by natural selection is often summarized as 'survival of the fittest.' In this context, 'fittest' refers to:
A) The strongest and fastest individuals.
B) The individuals best adapted to their specific environment and most successful at reproducing.
C) The individuals with the most offspring, regardless of survival.
D) The oldest individuals in a population.
15. Lamarck's theory of evolution was influential in its time but is largely discredited today due to:
A) Lack of fossil evidence
B) The absence of a mechanism for inheritance of acquired traits
C) The discovery of DNA
D) The overwhelming evidence for natural selection
16. The modern evolutionary synthesis incorporated the concept of genetic drift, which is:
A) The differential survival and reproduction of individuals due to differences in phenotype.
B) Random fluctuations in allele frequencies from one generation to the next, especially in small populations.
C) The movement of genes between populations.
D) The origin of new genetic variants through mutation.
17. A key difference between Lamarck's and Darwin's theories lies in the mechanism of change. Lamarck emphasized ________, while Darwin emphasized ________.
A) natural selection; inheritance of acquired traits
B) inheritance of acquired traits; natural selection
C) mutation; genetic drift
D) sexual selection; artificial selection
18. The concept of 'gradualism' in Darwin's theory suggests that:
A) Evolution occurs through sudden, large leaps.
B) Evolutionary changes happen slowly and accumulate over long periods.
C) Evolution is a directed process towards a predetermined goal.
D) Only advantageous mutations drive evolutionary change.
19. Darwin's observation that finches on different Galapagos Islands had distinct beak shapes suited to their specific food sources was evidence for:
A) The fixity of species
B) Artificial selection
C) Adaptive radiation
D) Lamarckian inheritance
20. Which scientist's work on pea plants laid the foundation for understanding the mechanisms of heredity, which was later integrated into the modern evolutionary synthesis?
A) Charles Darwin
B) Gregor Mendel
C) Jean-Baptiste Lamarck
D) Alfred Russel Wallace
21. The modern evolutionary synthesis emphasizes that evolutionary change is primarily driven by:
A) Directed mutation
B) Natural selection acting on genetic variation
C) Inheritance of acquired characteristics
D) Non-random mating
22. The 'Origin of Species' was a seminal work published by:
A) Jean-Baptiste Lamarck
B) Alfred Russel Wallace
C) Charles Darwin
D) Gregor Mendel
23. Lamarck's theory is sometimes referred to as the inheritance of acquired characteristics. Which of the following is an example that aligns with this idea?
A) A polar bear developing thicker fur over generations due to cold climates.
B) A person who trains extensively for bodybuilding develops large muscles, and their children are born with a predisposition for larger muscles.
C) A population of insects becoming resistant to a pesticide due to natural selection.
D) A giraffe's neck growing longer because it stretches to reach higher leaves.
24. According to Darwin's theory, evolution occurs at the level of:
A) Individual organisms
B) Populations
C) Species
D) Ecosystems
25. Alfred Russel Wallace's contribution to evolutionary theory was significant because he:
A) Published the first comprehensive book on evolution.
B) Provided evidence for inheritance of acquired characteristics.
C) Independently developed a theory of evolution by natural selection.
D) Developed the field of genetics.
26. The modern synthesis, developed in the mid-20th century, is considered a cornerstone of evolutionary biology because it:
A) Replaced Darwin's theory with a new framework.
B) Unified genetics, paleontology, and evolutionary theory.
C) Focused solely on the mechanisms of mutation.
D) Argued against the concept of natural selection.
27. The 'use and disuse' principle, proposed by Lamarck, suggests that:
A) Orgsnsms develop traits they need through practice.
B) Organs that are used more become stronger and larger, while those not used atrophy.
C) Environmental pressures cause random genetic mutations.
D) Only the fittest individuals pass on their genes.
28. Darwin's theory of natural selection explains the 'fit' between organisms and their environment as a result of:
A) Predetermined destiny
B) Random chance
C) Differential reproductive success
D) Conscious effort by organisms
29. Which historical figure proposed that organisms could change over time in response to their environment, leading to new species?
A) Gregor Mendel
B) James Hutton
C) Jean-Baptiste Lamarck
D) Aristotle
30. The modern evolutionary synthesis resolved the conflict between Darwin's continuous variation and Mendel's discrete inheritance by showing that:
A) Continuous variation is caused by single gene mutations.
B) Discrete traits are unaffected by natural selection.
C) Continuous variation arises from the combined effects of many genes (polygenism).
D) Mendelian inheritance only applies to artificial selection.
31. Darwin's explanation for the evolution of the human eye, which is incredibly complex, relied on:
A) A single, miraculous mutation
B) Progressive, cumulative changes over vast periods
C) Divine intervention
D) An inherent drive towards complexity
32. The concept of 'inheritance of acquired characteristics' was central to Lamarck's theory. This means that:
A) Traits determined by genes are passed from parents to offspring.
B) Modifications an organism makes during its lifetime can be inherited.
C) Only traits that increase an organism's survival are passed on.
D) Evolutionary changes occur through random mutations.
33. Lamarck's contribution to evolutionary thought included the idea that:
A) Species are immutable and unchanging.
B) Evolution proceeds through a series of discrete, sudden leaps.
C) Organisms have an inherent drive towards complexity.
D) Natural selection is the sole driver of evolution.
34. Which of the following is NOT a principle of Darwin's theory of natural selection?
A) Variation exists within populations.
B) Organisms compete for limited resources.
C) Traits acquired during an organism's lifetime are inherited.
D) Individuals with advantageous traits are more likely to survive and reproduce.
35. The 'synthesis' in evolutionary synthesis is crucial because it reconciled Darwin's ideas with:
A) Mendelian genetics, which explained the mechanism of inheritance
B) Lamarckian principles, which explained adaptation
C) Biogeographical patterns, which supported geographic speciation
D) Paleontological evidence, which showed gradual change over time
36. Darwin's voyage on the HMS Beagle provided him with extensive evidence for his theory, particularly from:
A) The fossil record of ancient Egypt
B) The diversity of finches and tortoises on the Galapagos Islands
C) The study of domestic animal breeding
D) Observations of deep-sea hydrothermal vents
37. Lamarck's theory of evolution is often criticized for its reliance on the inheritance of acquired characteristics. An example of this would be:
A) A bird evolving wings due to the need for flight.
B) A blacksmith developing strong arms and passing this muscularity to his children.
C) A rabbit population developing camouflage through natural selection.
D) A fish evolving gills to breathe underwater.
38. The modern evolutionary synthesis integrated ideas from multiple fields, including population genetics, paleontology, and systematics. What was a major contribution of population genetics to this synthesis?
A) Explaining the origin of new species through geographic isolation
B) Providing a mathematical framework for understanding changes in allele frequencies
C) Demonstrating that evolution occurs through gradual accumulation of small changes
D) Highlighting the role of mass extinctions in evolutionary history
39. The concept of 'fitness' in Darwinian evolution refers to:
A) Physical strength of an organism
B) Ability to survive and reproduce in a particular environment
C) Longevity of an organism
D) Number of offspring produced, regardless of survival
40. Lamarck's theory suggested that environmental changes would lead to:
A) Extinction of species
B) New adaptations arising from the need for them
C) Random genetic mutations
D) A decrease in reproductive rates
41. Which of the following is a key component of Darwin's theory of natural selection?
A) Directed evolution towards perfection
B) Random mating between all individuals
C) Differential survival and reproduction of individuals with advantageous traits
D) Inheritance of traits acquired during an organism's lifetime
42. The Neo-Darwinian synthesis, or the modern evolutionary synthesis, primarily addresses the lack of a clear mechanism for inheritance in Darwin's original work by incorporating findings from:
A) Paleontology
B) Genetics
C) Biochemistry
D) Ecology
43. Who is credited with independently conceiving the theory of evolution by natural selection alongside Charles Darwin?
A) Gregor Mendel
B) Alfred Russel Wallace
C) Jean-Baptiste Lamarck
D) Thomas Malthus
44. The 'synthesis' in the modern evolutionary synthesis refers to the integration of:
A) Lamarckism and Darwinism
B) Genetics and Darwin's theory of natural selection
C) Paleontology and embryology
D) Biogeography and geology
45. What is the primary mechanism of evolution proposed by Charles Darwin?
A) Inheritance of acquired traits
B) Artificial selection
C) Natural selection
D) Genetic drift
46. Darwin's concept of 'struggle for existence' implies that:
A) All organisms within a population are identical.
B) Organisms produce more offspring than can possibly survive.
C) Only the strongest organisms survive.
D) Competition is only between different species.
47. Which of the following observations was crucial for Darwin's theory of natural selection?
A) The high rate of reproduction in most species
B) The limited availability of resources
C) The variation within populations
D) All of the above
48. According to Lamarck's theory, how did giraffes acquire their long necks?
A) Individuals with slightly longer necks survived and reproduced more often.
B) Ancestral giraffes stretched their necks to reach higher leaves, and this trait was passed on.
C) A random mutation caused an increase in neck length.
D) Predators favored giraffes with longer necks for better visibility.
49. Lamarck's theory of evolution is primarily based on which of the following principles?
A) Natural selection and inheritance of acquired characteristics
B) Inheritance of acquired characteristics and use and disuse of organs
C) Genetic mutation and gene flow
D) Survival of the fittest and genetic drift
50. Who is considered the father of evolutionary biology and proposed the theory of evolution by natural selection?
A) Jean-Baptiste Lamarck
B) Charles Darwin
C) Alfred Russel Wallace
D) Gregor Mendel