This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 40 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 40 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Unlike mitosis, meiosis results in the formation of A) Two genetically identical cells. B) Four genetically identical cells. C) Four genetically different cells. D) Two genetically different cells. Show Answer Correct Answer: C) Four genetically different cells. 2. In a flowering plant species, red flower color (R) is dominant over white flower color (r). What is the probability of having a white flowered plant if the parents were heterozygous red and homozygous red? A) 0%. B) 25%. C) 50%. D) 100%. Show Answer Correct Answer: A) 0%. 3. Snapdragon flowers come in red, pink and white. Pink is what type of inheritance is this? A) Complete Dominance. B) Incomplete Dominance. C) Codominance. D) Polygenic Inheritance. Show Answer Correct Answer: B) Incomplete Dominance. 4. Gregor Mendel removed the male parts from the flowers of some plants in order to A) Prevent hybrids from forming. B) Prevent cross-pollination. C) Stimulate self-pollination. D) Control crosses between plants. Show Answer Correct Answer: D) Control crosses between plants. 5. What is a tetrad? A) Two sets of sister chromatids. B) A chromatid before meiosis. C) Another term for a sperm cell. D) A haploid cell produced by meiosis. Show Answer Correct Answer: A) Two sets of sister chromatids. 6. Plasmid A) DNA produced by combining DNA from different sources. B) Small, circular piece of DNA located in the cytoplasm of many bacteria. C) Term used to refer to an organism that contains genes from other organism. D) None of above. Show Answer Correct Answer: B) Small, circular piece of DNA located in the cytoplasm of many bacteria. 7. What is NOT a principle of genetics? A) The recessive trait will always show up. B) Traits are determined by gene pairs. C) Traits are passed from parents to offspring. D) Genes are usually dominant or recessive. Show Answer Correct Answer: A) The recessive trait will always show up. 8. Gametes are produced by the process of A) Mitosis. B) Meiosis. C) Crossing-over. D) Replication. Show Answer Correct Answer: B) Meiosis. 9. Two true-breeding parents are crossed similar to Mendel's P generation. A tall plant (TT) is crossed with a short plant (tt). What is the expected outcome for the F1 generation? A) All short. B) All tall. C) All medium height. D) Half tall, half short. Show Answer Correct Answer: B) All tall. 10. Instructions for an inherited trait A) Alleles. B) Genes. C) Phenotype. D) Genotype. Show Answer Correct Answer: B) Genes. 11. A couple, with the genotypes:XH XhandXH Yhave children. If Xh is hemophilia, will any of the male offspring be hemophiliacs? A) Yes, there's a 50% shot that male offspring will be. B) Yes, all of the male offspring. C) No, none of the male offspring will be hemophiliacs. D) This couple is incapable of having male offspring. Show Answer Correct Answer: A) Yes, there's a 50% shot that male offspring will be. 12. The genetic makeup of an organism A) Punnett Square. B) DNA. C) Phenotype. D) Genotype. Show Answer Correct Answer: D) Genotype. 13. A tool used to predict the possibility of offspring A) Gene Circle. B) Gene Square. C) Punnett Circle. D) Punnett Square. Show Answer Correct Answer: D) Punnett Square. 14. Why can the principles of probability be used to predict the outcomes of genetic crosses? A) The way in which the alleles segregate is completely random like a coin flip. B) The likelihood of an allele being dominant is completely random like a coin flip. C) Whether a plant is self-pollinating is completely random like a coin flip. D) Whether a pea plant will grow is completely random like a coin flip. Show Answer Correct Answer: A) The way in which the alleles segregate is completely random like a coin flip. 15. Two copies of each hereditary factor segregate so that offspring acquire one factor from each parent A) Law of segregation. B) Law of meiosis. C) Law of gravity. D) Transcription. Show Answer Correct Answer: A) Law of segregation. 16. The purpose of a car engine is to transform the chemical energy of gasoline into kinetic energy of the car in motion. Gasoline is burned in the engine to create that movement. However, gasoline engines are typically only about 20% efficient. What happens to the rest of the energy released from the burning gasoline? A) Most of it is destroyed by the process of the gasoline burning. B) Most of it is changed through chemical reaction to a type of nuclear energy. C) Most of it is transformed by the engine into electrical energy. D) Most of it is transferred to the environment in the form of heat. Show Answer Correct Answer: D) Most of it is transferred to the environment in the form of heat. 17. At fertilization, what happens to the sex cells A) They retain half of their chromosomes. B) Half of the cells copy their DNA twice. C) They fuse to form a zygote. D) One becomes an egg, and one becomes a sperm cell. Show Answer Correct Answer: C) They fuse to form a zygote. 18. Mendel observed during his experiments that being tall didn't automatically mean that the plants would have green pods and that green pods didn't have to be filled only with wrinkled seeds. Into which principle did he translate these observations? A) Principle of independent assortment. B) Principle of dominance. C) Principle of segregation. D) None of above. Show Answer Correct Answer: A) Principle of independent assortment. 19. An organism's ..... is inherited from its parents. A) Dominance. B) Genetic drift. C) Genotype. D) Phenotype. Show Answer Correct Answer: C) Genotype. 20. In screech owls, red feathers(R) are dominant over gray feathers (r). If two hybrid red-feathered owls are mated, what percentage of their offspring would be expected to have red feathers? A) 50%. B) 100%. C) 25%. D) 75%. Show Answer Correct Answer: D) 75%. ← PreviousNext →Related QuizzesPlant QuizzesPrinciples Of Genetics Quiz 1Principles Of Genetics Quiz 2Principles Of Genetics Quiz 3Principles Of Genetics Quiz 4Principles Of Genetics Quiz 5Principles Of Genetics Quiz 6Principles Of Genetics Quiz 7Principles Of Genetics Quiz 8Principles Of Genetics Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books