This quiz works best with JavaScript enabled. Home > Plant > Principles Of Genetics – Quiz 46 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 46 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. In fruit flies, the gene for eye color is located on the X chromosomes, and the red eye allele (R) is dominant to the white eye allele (r). A female fly with genotype XRXr is mated with a male fly with genotype XrY. Which of the following statements best describes the expected outcome of the cross? A) The chance of an offspring having red eyes is 75%. B) The chance of an offspring having white eyes is 50%. C) The chance that a male offspring will have white eyes is 0%. D) The chance that a female offspring will have red eyes is 100%. Show Answer Correct Answer: B) The chance of an offspring having white eyes is 50%. 2. A sudden change in the gene which is heritable from one generation to other is known as? A) Variation. B) Cloning. C) Totipotency. D) Mutation. Show Answer Correct Answer: D) Mutation. 3. Sex-Linked Gene A) Gene located on a sex chromosome. B) Genetic makeup of an organism. C) Sequence of DNA that codes for a protein and thus determines a trait; factor that is passed from the parent to offspring. D) None of above. Show Answer Correct Answer: A) Gene located on a sex chromosome. 4. The phenotype is the ..... A) Physical appearance of an organism. B) Genetic makeup. C) Alleles acquired from a specific parent. D) None of above. Show Answer Correct Answer: A) Physical appearance of an organism. 5. If a trait SKIPS a generation, it is an indication that the trait is ..... A) Dominant. B) Recessive. C) Incompletely dominant. D) Co-dominant. Show Answer Correct Answer: B) Recessive. 6. Principle of Dominance A) Micrograph of the complete diploid set of chromosomes grouped together in pairs, arranged in order of decreasing size. B) The technique used by biologists to make many copies of a particular gene. C) Mendel's second conclusion, which states that some alleles are dominant and others are recessive. D) One of Mendel's principles that states that genes for different traits can segregate independently during the formation of gametes. Show Answer Correct Answer: C) Mendel's second conclusion, which states that some alleles are dominant and others are recessive. 7. Meiosis results in the formation of A) Diploid cells. B) Haploid cells. C) 2N daughter cells. D) Body cells. Show Answer Correct Answer: B) Haploid cells. 8. If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what? A) Sex-linked trait. B) Polygenic trait. C) Codominant trait. D) Incomplete dominance trait. Show Answer Correct Answer: A) Sex-linked trait. 9. Chart that shows the presence or absence of a trait according to the relationships within a family across several generations A) Pedigree. B) Genomics. C) Genome. D) Nondisjunction. Show Answer Correct Answer: A) Pedigree. 10. Cross between individuals for a single contrasting trait A) Monohybrid. B) Hybrid. C) Genohybrid. D) None of above. Show Answer Correct Answer: A) Monohybrid. 11. How many traits did Mendel study in his pea plants? A) 1. B) 3. C) 5. D) 7. Show Answer Correct Answer: D) 7. 12. What is an acquired trait? A) Going to walmart. B) Shopping at Target. C) A trait that you get during your lifetime. D) Something cool. Show Answer Correct Answer: C) A trait that you get during your lifetime. 13. Which is a true statement about people with the genotype AB for a blood type? A) They have two alleles that are codominant. B) They exhibit a type O phenotype. C) They are homozygous for blood type A. D) They can have only type O children. Show Answer Correct Answer: A) They have two alleles that are codominant. 14. Mitotic cell division results in two cells that have: A) N chromosomes and are genetically identical. B) N chromosomes and are genetically different. C) 2n chromosomes and are genetically identical. D) 2n chromosomes and are genetically different. Show Answer Correct Answer: C) 2n chromosomes and are genetically identical. 15. In Deoxyribonucleic acid, Adenine pairs with the nitrogen base ..... A) Cytosine. B) Uracil. C) Guanine. D) Thymine. Show Answer Correct Answer: D) Thymine. 16. In bunnies, black fur is dominant over white fur. If 50% of one generation of bunnies have white fur, what were the probable genotypes of the parents? A) TT x tt. B) Tt x Tt. C) Tt x tt. D) Tt x tt. Show Answer Correct Answer: C) Tt x tt. 17. An example of polygenic inheritance is ..... A) Skin Color. B) Hitch hikers thumb. C) Blood types. D) None of above. Show Answer Correct Answer: A) Skin Color. 18. T = Tall; t = short and Y = Yellow seeds; y = green seedsWhat is the phenotype for a plant that is Ttyy? A) Tall and green seeds. B) Short and yellow seeds. C) Tall and yellow seeds. D) Short and green seeds. Show Answer Correct Answer: A) Tall and green seeds. 19. Condition that causes colorless hair, skin, and eyes A) Homozygous. B) Genes. C) Albinism. D) Punnett square. Show Answer Correct Answer: C) Albinism. 20. Which of the following BEST describes a genotype with Pp? A) Homozygous dominant. B) Heterozygous. C) Homozygous recessive. D) Heterozygous dominant. Show Answer Correct Answer: B) 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