This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Biology Chapter 7 Evolution – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Biology Chapter 7 Evolution Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A slight difference in an inherited trait between individual members of the same species. A) Variations. B) Adapatations. C) Homologous structures. D) Analogous structures. Show Answer Correct Answer: A) Variations. 2. Which scientist proposed that a giraffe, while stretching its neck to obtain food, could pass this trait on to its offspring? A) Darwin. B) Wallace. C) Lamarck. D) Redi. Show Answer Correct Answer: C) Lamarck. 3. Gel electrophoresis is a way of separating genes due to their relative size. The larger the gene, the less distance it travels in the gel. The electrophoresis results can best support which of the following conclusions? A) Genetic mutations occur more frequently. B) Some organisms can share similar genes. C) Organisms can have superior protein structures. D) Muscle cells produce more hemoglobin than do cells from the other tissues. Show Answer Correct Answer: B) Some organisms can share similar genes. 4. What is a change in relative frequencies in a gene pool due to a sudden, drastic reduction in population size? A) Bottleneck Effect. B) Founder Effect. C) Reduction Effect. D) Disaster Effect. Show Answer Correct Answer: A) Bottleneck Effect. 5. A randomly selected group from a family would show more genetic variation than a randomly selected group from a A) Genus. B) Class. C) Kingdom. D) Domain. Show Answer Correct Answer: A) Genus. 6. Why are keystone species often targeted for conservation efforts? A) They are the most endangered species. B) They have the least genetic diversity. C) Their presence is crucial for the stability of the ecosystem. D) They are the largest species in the ecosystem. Show Answer Correct Answer: C) Their presence is crucial for the stability of the ecosystem. 7. Selective breeding of domesticated plants and animals to produce offspring with desired genetic traits A) Stabilizing selection. B) Artificial selection. C) Disruptive selection. D) Directional selection. Show Answer Correct Answer: B) Artificial selection. 8. What does variation in a population mean? A) There is no change over time. B) The population is decreasing. C) Individuals have differences, such as in height or hair color. D) All individuals are identical. Show Answer Correct Answer: C) Individuals have differences, such as in height or hair color. 9. Which of the following is NOT a factor that affects the process of natural selection? A) Overpopulation. B) Fossils. C) Competition. D) Variations. Show Answer Correct Answer: B) Fossils. 10. What does the term 'gene flow' refer to? A) The creation of new genes through mutation. B) The movement of genes between populations. C) The transfer of genes from parent to offspring. D) The movement of genes within an individual. Show Answer Correct Answer: B) The movement of genes between populations. 11. If you are to construct a cladogram over ape species, Which of the following would be furthest apart? A) Rodents and apes. B) Chimpanzee and Humans. C) Lemur and Gorillas. D) Gorilla and Humans. Show Answer Correct Answer: A) Rodents and apes. 12. Two plant species live in the same biome but on different continents. Although the two species are not at all closely related, they may appear quite similar as a result of A) Allopatric Speciaion. B) Convergent Evolution. C) Divergent Evolution. D) Gene Flow. Show Answer Correct Answer: B) Convergent Evolution. 13. Which of the following is not a condition required for maintaining the Hardy-Weinberg Equilibrium? A) Mating is not random. B) No mutation takes place. C) No natural selection takes place. D) There is no gene flow through migration. Show Answer Correct Answer: A) Mating is not random. 14. Antibiotic resistant strains of bacteria are on the increase, according to data from the CDC. Which of the following best provides a description for antibiotic resistance? A) Sexual reproduction. B) Changes in the whole DNA. C) Natural selection. D) Drug failure. Show Answer Correct Answer: C) Natural selection. 15. In rock layers, jellyfish fossils are found lower than trilobite fossils, and trilobite fossils are found lower than ammonite fossils. What can be determined from this information? A) Trilobites existed before jellyfish and ammonites. B) Jellyfish existed before trilobites and ammonites. C) Ammonites exited before trilobites and jellyfish. D) Jellyfish, trilobites, and ammonites lived together. Show Answer Correct Answer: B) Jellyfish existed before trilobites and ammonites. 16. Rhinoceroses and horses are related. They have very similar digestive systems and an odd number of toes on their feet. Horses have one toe, and rhinoceroses have three. These facts BEST support which claim? A) Horses and rhinoceroses share a common ancestor. B) Horses and rhinoceroses are genetically identical. C) Horses are the ancestors of modern rhinoceroses. D) Horses have descended from modern rhinoceroses. Show Answer Correct Answer: A) Horses and rhinoceroses share a common ancestor. 17. Human newborns usually weigh between 6-8 pounds A) Stabilizing selection. B) Directional selection. C) Disruptive selection. D) Sexual selection. Show Answer Correct Answer: A) Stabilizing selection. 18. Which of the following statements are TRUE about organisms in the Domain Bacteria?I. Consist of bacteria and archaebacteriaII. Some are photoautotrophsIII. Genetic material is associated with histone proteinIV. Membrane-enclosed organelles are not present A) I and II. B) I and III. C) II and III. D) II and IV. Show Answer Correct Answer: D) II and IV. 19. Is a mechanism of evolution that results from random fluctuations in the frequency of alleles (versions of a gene) in a population. It occurs when the frequency of an allele changes in a population by chance, rather than by natural selection. A) Population Genetics. B) Mendelian Population. C) Genetic Drift. D) The Hardy-Weinberg principle of equilibrium. Show Answer Correct Answer: C) Genetic Drift. 20. Used for how old the meteorites A) RADIUM-STRINTIUM DATING. B) URANIUM-LEAD DATING. C) POTASSIUM-ARGON DATING. D) Samarium-Neodymium Dating. Show Answer Correct Answer: D) Samarium-Neodymium Dating. 21. Contain uranium A) RADIOMETRIC DATING. B) URANIUM-LEAD DATING. C) POTASSIUM-ARGON DATING. D) CARBON-DATING. Show Answer Correct Answer: B) URANIUM-LEAD DATING. 22. ..... :The process whereby organisms better adapted to their environment tend to survive and produce more offspring. A) Natural Selection. B) Evolution. C) Artificial Selection. D) Interspecific breeding. Show Answer Correct Answer: A) Natural Selection. 23. Evolution theory has been tested many times, and has always been supported bythe evidence. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 24. Can bacteria be photosynthetic? A) Yes, like cyanobacteria. B) No, there are no phototrophic bacteria. C) All the above. D) None of the above. Show Answer Correct Answer: A) Yes, like cyanobacteria. 25. P + q = 1. If p represents the dominant allele frequency, what would q represent? A) The homozygous dominant genotype frequency. B) The recessive allele frequency. C) The total amount of alleles in the population. D) A measure of fitness in the population. Show Answer Correct Answer: B) The recessive allele frequency. ← PreviousNext →Related QuizzesClass 12 Biology Chapter 7 Evolution Quiz 1Class 12 Biology Chapter 7 Evolution Quiz 2Class 12 Biology Chapter 7 Evolution Quiz 3Class 12 Biology Chapter 7 Evolution Quiz 4Class 12 Biology Chapter 7 Evolution Quiz 5Class 12 Biology Chapter 7 Evolution Quiz 6Class 12 Biology Chapter 7 Evolution Quiz 7Class 12 Biology Chapter 7 Evolution Quiz 8Class 12 Biology Chapter 7 Evolution Quiz 9Class 12 Biology Chapter 7 Evolution Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books