This quiz works best with JavaScript enabled. Home > Agriculture > Plant > Genetics > Principles Of Genetics – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 17 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Gregor Mendel used pea plants to study A) The inheritance of traits. B) Flowering. C) Cross-pollination. D) Gamete formation. Show Answer Correct Answer: A) The inheritance of traits. 2. Consists of the traits coded for by the alleles in a genotype A) Phenotype. B) Incomplete dominance. C) Genetics. D) Recessive. Show Answer Correct Answer: A) Phenotype. 3. Human DNA is packaged in the cell into ..... A) 18 pairs of chromosomes. B) 23 pairs of chromosomes. C) 6 pairs of chromosomes. D) 12 pairs chromosomes. Show Answer Correct Answer: B) 23 pairs of chromosomes. 4. A man with Klinefelter syndrome (47, XXY) is expected to have any of the following EXCEPT A) Lower sperm count. B) Possible breast enlargement. C) Female body characteristics. D) Increased testosterone. Show Answer Correct Answer: D) Increased testosterone. 5. Glacier bears are an Alaskan subspecies of the American black bear. Glacier bears have a rare dark grayish-blue fur. Some glacier bears live in the same areas as black bears. A glacier bear and a black bear can mate and produce cubs. Studies show that the allele for black fur is dominant and the allele for gray-blue fur is recessive.The gene for fur color can be represented by the letter G or g. The genotype for gray-blue glacier bears is ..... A) GG. B) Gg. C) Gg. D) None of above. Show Answer Correct Answer: B) Gg. 6. When Mendel Allowed the tall F1 pea plants (Tt) to self pollinate A) The offspring were of medium height. B) All of the offspring were tall. C) All the offspring were short. D) Some of the offspring were short. Show Answer Correct Answer: D) Some of the offspring were short. 7. The chemical factors that determine traits are called A) Genes. B) Characters. C) Traits. D) Alleles. Show Answer Correct Answer: A) Genes. 8. What would population of foxes with large ears do in the desert? A) Increase. B) Decrease. C) Remain the same. D) Change randomly. Show Answer Correct Answer: A) Increase. 9. What is the correct abbreviation for deoxyribonucleic acid? A) DM, Inc. B) DOA. C) RNA. D) DNA. Show Answer Correct Answer: D) DNA. 10. Mendel proposed that traits observed in pea plants resulted from a combination of "factors" inherited from each parent. His description of these "factors" can be considered the first scientific definition of the role of - A) Meiosis. B) Cell nuclei. C) Ribosomes. D) Genes. Show Answer Correct Answer: D) Genes. 11. Why is the Principle of Probability essential for predicting the genetic make up of offspring? A) Parents can now know the probability of their offspring having certain traits that can be harmful to their health. B) It allows for parents to genetically engineer the offspring they want. C) Doctors can now give you the traits that you want based on the probability of your genetic make up. D) The principle of probability is not essential to for predicting the genetic make up of offspring. Show Answer Correct Answer: A) Parents can now know the probability of their offspring having certain traits that can be harmful to their health. 12. A gene has more than two possible alleles. A) Polygenic inheritance. B) Incomplete dominance. C) Multiple alleles. D) Simple dominance. Show Answer Correct Answer: C) Multiple alleles. 13. Which of the following does a creationist not believe about natural selection? A) Natural selection affects the existing traits that God designed in DNA. B) Natural selection allows the ratios of certain traits to increase or decrease. C) Natural selection can eliminate alleles for specific traits. D) Natural selection is the means by which all creatures descended from an original common ancestor. Show Answer Correct Answer: D) Natural selection is the means by which all creatures descended from an original common ancestor. 14. A cross between F1 hybrids with either of the parent is called A) Back-cross. B) Test-cross. C) Reverse-cross. D) None of these. Show Answer Correct Answer: A) Back-cross. 15. In humans, a male has A) One X chromosome only. B) Two X chromosomes. C) One X chromosome and one Y chromosome. D) Two Y chromosomes. Show Answer Correct Answer: C) One X chromosome and one Y chromosome. 16. What do we use to calculate Mendels Probablilties A) Punett square. B) A testcross. C) A Hypothesis. D) Monohybrid cross. Show Answer Correct Answer: A) Punett square. 17. Genomic Imprinting A) Process in which epigenetic chemical marks can be passed from one generation to the next in a sex-specific way. B) Method of breeding that allows only those organisms with desired characteristics to produce the next generation. C) Procedure used to separate and analyze DNA fragments by replacing a mixture of DNA fragments at one end of a porous gel and applying an electrical voltage to the gel. D) None of above. Show Answer Correct Answer: A) Process in which epigenetic chemical marks can be passed from one generation to the next in a sex-specific way. 18. The pattern of inheritance in which there are three or more possible alleles for a trait is A) Incomplete dominance. B) Codominance. C) Polygenic Inheritance. D) Multiple Alleles. Show Answer Correct Answer: D) Multiple Alleles. 19. The passing of genetic traits from parent to offspring. A) Heredity. B) Trait. C) Gene. D) Allele. Show Answer Correct Answer: A) Heredity. 20. An allele is ..... A) One of several possible forms of a gene. B) A heterozygous genotype. C) A homozygous genotype. D) Another word for a gene. Show Answer Correct Answer: A) One of several possible forms of a gene. 21. What would NOT represent an inherited trait for a plant? A) How tall it grows. B) The type of fruit it produces. C) If it receives enough rain. D) The color of its flowers. Show Answer Correct Answer: C) If it receives enough rain. 22. When an organism has two alleles that are DIFFERENT for a trait A) Hybrid. B) Pheotype. C) Heterozygous. D) DNA. Show Answer Correct Answer: C) Heterozygous. 23. A segment of DNA that codes for a trait A) Gene. B) Allele. C) Chromosome. D) Chromatid. Show Answer Correct Answer: A) Gene. 24. One way that meiosis I is different from mitosis is that A) Replication occurs during interphase before mitosis, but not before meiosis I. B) Homologous chromosomes are segregated during mitosis, but remain together during meiosis I. C) Meiosis I produces 2 haploid daughter cells, but mitosis produces 2 diploid daughter cells. D) Sister chromatids are pulled apart during meiosis I, but not during mitosis. Show Answer Correct Answer: C) Meiosis I produces 2 haploid daughter cells, but mitosis produces 2 diploid daughter cells. 25. Human hair color, which is controlled by more than one gene is an example of what? A) Polygenic inheritance. B) Incomplete dominance. C) Simple dominance. D) Codominance. Show Answer Correct Answer: A) Polygenic inheritance. 26. Mark is a tall, 11 year old boy. He has a scar on his right cheek. He is intelligent and an excellent drummer. Which of his traits did he most likely inherit? A) Height. B) Ability to play drums. C) His intelligence. D) The scar. Show Answer Correct Answer: A) Height. 27. Cutting DNA into small pieces that can be sequences is accomplished by A) Restriction enzymes. B) Gel electrophoresis. C) RNA polymerase. D) DNA polymerase. Show Answer Correct Answer: A) Restriction enzymes. 28. Gametes are produced by this process ..... A) Meiosis. B) Mitosis. C) Mitochondria. D) Cellular respiration. Show Answer Correct Answer: A) Meiosis. 29. Name the chromosome found in the cells which are responsible for characters other than sex chromosomes? A) Genome. B) Mitochondrial chromosome. C) Autosomes. D) Y chromosome. Show Answer Correct Answer: C) Autosomes. 30. R=round seedr=wrinkled seed.Cross a homozygous round with a wrinkled. Which statement predicts the results? A) Offspring will be RR. B) Round seeds will be recessive to wrinkled. C) Wrinkled will be observed in half of offspring. D) Offspring will be Rr. Show Answer Correct Answer: D) Offspring will be Rr. ← PreviousNext →Related QuizzesPlant QuizzesAgriculture 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books