This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 26 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 26 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Gene located on a sex chromosome A) Genomics. B) Sex-Linked Gene. C) Autosome. D) Karyotype. Show Answer Correct Answer: B) Sex-Linked Gene. 2. If an organisms has 2 identical alleles (TT or tt) for a trait it is called A) Heterozygous. B) Different. C) Twins. D) Homozygous. Show Answer Correct Answer: D) Homozygous. 3. The likelihood that a particular event will occur is called ..... A) Fertilization. B) Segregation. C) Probability. D) Dominance. Show Answer Correct Answer: C) Probability. 4. Gregor Mendel used pea plants to study A) Flowering. B) Gamete formation. C) The inheritance of traits. D) Cross-pollination. Show Answer Correct Answer: C) The inheritance of traits. 5. Consists of the traits coded for by the alleles in a genotype A) Genetics. B) Phenotype. C) Incomplete dominance. D) Recessive. Show Answer Correct Answer: B) Phenotype. 6. Human DNA is packaged in the cell into ..... A) 6 pairs of chromosomes. B) 18 pairs of chromosomes. C) 23 pairs of chromosomes. D) 12 pairs chromosomes. Show Answer Correct Answer: C) 23 pairs of chromosomes. 7. A man with Klinefelter syndrome (47, XXY) is expected to have any of the following EXCEPT A) Lower sperm count. B) Increased testosterone. C) Possible breast enlargement. D) Female body characteristics. Show Answer Correct Answer: B) Increased testosterone. 8. 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. 9. 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. 10. The chemical factors that determine traits are called A) Genes. B) Characters. C) Traits. D) Alleles. Show Answer Correct Answer: A) Genes. 11. 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. 12. Gene A) Sequence of DNA that codes for a protein and thus determines a trait; factor that is passed from the parent to offspring. B) A specific characteristic of an individual. C) Physical characteristics of an organism. D) Trait controlled by two or more genes. Show Answer Correct Answer: A) Sequence of DNA that codes for a protein and thus determines a trait; factor that is passed from the parent to offspring. 13. What is the correct abbreviation for deoxyribonucleic acid? A) DOA. B) DNA. C) DM, Inc. D) RNA. Show Answer Correct Answer: B) DNA. 14. 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) Genes. C) Ribosomes. D) Cell nuclei. Show Answer Correct Answer: B) Genes. 15. 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. 16. 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. 17. 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. 18. 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. 19. 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. 20. What do we use to calculate Mendels Probablilties A) A Hypothesis. B) Monohybrid cross. C) A testcross. D) Punett square. Show Answer Correct Answer: D) Punett square. ← 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