This quiz works best with JavaScript enabled. Home > Plant > Principles Of Genetics – Quiz 37 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 37 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which option below best describes polygenic inheritance? A) More than one set of genes contributing to the phenotype. B) A blending of genes getting an intermediate phenotype. C) A phenotype that has more than 2 possible alleles for a gene. D) None of above. Show Answer Correct Answer: A) More than one set of genes contributing to the phenotype. 2. What is the chemical called that is found inside our cell's nucleus and determines our inherited traits? A) D.N.A. B) Genes. C) Chromosomes. D) Chloroplast. Show Answer Correct Answer: A) D.N.A. 3. Whats co-dominance? A) Describes an allele that masks the phenotypic effect of the other. B) The case in which the hetero-zygote displays characteristics of both alleles. C) Describes the genotype of a trait for which the two alleles an individual carries are the same. D) None of above. Show Answer Correct Answer: B) The case in which the hetero-zygote displays characteristics of both alleles. 4. The Australian Shepherds of America Club discourages from mating two merles. Which of the following best explains why merle to merle matings are undesirable? A) The cross has the probability of producing litters with 50% solid coat color pups. B) The cross produces all homozygous recessive pups. C) The cross has the probability of producing litters with 25% merle coat pups. D) The cross has a 25% chance of producing homozygous dominant pups. Show Answer Correct Answer: D) The cross has a 25% chance of producing homozygous dominant pups. 5. A wide range of phenotypic variations occur in the trait for human height. Which of the following accounts for these variations? A) Polygenic Inheritance. B) Codominance. C) Incomplete dominance. D) Multiple Alleles. Show Answer Correct Answer: A) Polygenic Inheritance. 6. Principle/Law of Independent is defined as ..... A) Some alleles are dominant over others. B) Allele pairs separate during gamete formation and randomly unite at fertilization. C) During gamete formation genes for different traits separate without influencing each other's inheritance. D) None of above. Show Answer Correct Answer: C) During gamete formation genes for different traits separate without influencing each other's inheritance. 7. Restriction Enzyme A) Process in which epigenetic chemical marks can be passed from one generation to the next in a sex-specific way. B) Enzyme that cuts DNA at a sequence of nucleotides. C) Error in meiosis in which the homologous chromosomes fail to separate properly. D) None of above. Show Answer Correct Answer: B) Enzyme that cuts DNA at a sequence of nucleotides. 8. Dog breeders around the world want to breed certain traits within dogs. One dog, for instance, can have both the floppy ear genetic trait, and a straight ear genetic trait. Mrs. Lloyd is a dog breeder who knows that her dog has the floppy ears gene (tt), but wants all of her dogs future offspring to have straight ears. What type of genotype would the other dog have to have inherited for Mrs. Lloyd's dog to reproduce puppy's with the straight ear gene? A) Mrs. Lloyd would have to breed her dog with a dog that has homozygous dominant gene trait. This means that if you cross a homozygous dominant allele pair and a homozygous recessive allele pair, the future offspring will have a 100 percent chance to have the straight ear gene. B) Mrs. Lloyd would have to breed her dog with a dog that has heterozygous dominant gene trait. This means that if you cross a heterozygous dominant allele pair with a homozygous recessive allele pair, the future offspring will have a 100 percent chance to have the straight ear gene. C) Mrs. Lloyd would have to breed her dog with a dog that has homozygous recessive gene trait. This means that if you cross a homozygous recessive allele pair and a homozygous recessive allele pair, the future offspring will have a 100 percent chance to have the straight ear gene. D) The dog is unable to have straight eared puppies, but the puppies future offspring may be able to breed straight eared puppies. Show Answer Correct Answer: A) Mrs. Lloyd would have to breed her dog with a dog that has homozygous dominant gene trait. This means that if you cross a homozygous dominant allele pair and a homozygous recessive allele pair, the future offspring will have a 100 percent chance to have the straight ear gene. 9. To perform his experiments, how did Mendel prevent pea flowers from self-pollinating and control their cross-pollination? A) He separated the male plants from the female plants. B) He did not try to prevent the plants from self-pollinating. C) He removed the male parts from the flowers and manually placed pollen on the plants. D) He removed the female parts from the flowers and manually placed pollen on the plants. Show Answer Correct Answer: C) He removed the male parts from the flowers and manually placed pollen on the plants. 10. Which of Mendel's laws states that alleles are separated during meiosis? A) Law of Dominance. B) Law of Segregation. C) Law of Independent Assortment. D) Law of Meiosis. Show Answer Correct Answer: B) Law of Segregation. 11. Application of mathematics and computer science to store, retrieve, and analyze biological data A) Gel Electrophoresis. B) Pedigree. C) Bioinformatics. D) Genomics. Show Answer Correct Answer: C) Bioinformatics. 12. Which law states that organisms inherit two copies of each gene and donate only one copy to each of their offspring? A) Law of segregation. B) Law of inheritance. C) Law of genetic linkage. D) Law of independent assortment. Show Answer Correct Answer: A) Law of segregation. 13. The best genome representation for homozygous recessive A) AA. B) Aa. C) Aa. D) None of above. Show Answer Correct Answer: B) Aa. 14. When Gregor Mendel crossed a tall plant with a short plant, the new baby plants inherited A) Two alleles from each parent. B) One allele from each parent. C) Two alleles from one parent. D) Four alleles from each parent. Show Answer Correct Answer: B) One allele from each parent. 15. Natural selection has the potential to accomplish which of the following? A) Allow a school of fish in the sea to become land-dwelling creatures. B) Change a population of foxes into mountain lions. C) Change a colony of bacteria into multicellular organisms. D) Allow finches to develop differently shaped beaks. Show Answer Correct Answer: D) Allow finches to develop differently shaped beaks. 16. In some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.Complete a cross between A speckled flower and a red flower. Find the phenotype ratio. A) 2 red:2 speckled:0 white. B) 4 red:0 speckled:0 white. C) 0 red:4 speckled:0 white. D) 0 red:2 speckled:2 white. Show Answer Correct Answer: A) 2 red:2 speckled:0 white. 17. In tobacco, if the diploid number of chromosomes is 48, how many chromosomes will be found in a pollen grain? A) 96. B) 48. C) 24. D) 12. Show Answer Correct Answer: C) 24. 18. The principles of probability can be used to A) Predict the traits of the offspring of genetic crosses. B) Determine the actual outcomes of genetic crosses. C) Determine which species should be used in genetic crosses. D) Decide which organisms are best to use in genetic crosses. Show Answer Correct Answer: A) Predict the traits of the offspring of genetic crosses. 19. Hybrid has the same meaning as ..... A) Heterozygous. B) Homozygous. C) Purebred. D) None of above. Show Answer Correct Answer: A) Heterozygous. 20. If a brown-eyed girl's father has blueeyes, and her mother has brown eyes, she ismost likely ..... for the eye color trait. A) Heterozygous. B) Homozygous recessive. C) Not enough information to determine. D) Homozygous dominant. Show Answer Correct Answer: A) Heterozygous. ← PreviousNext →Related 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 9Principles Of Genetics Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books