This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 30 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 30 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which pair of alleles shown below are both DOMINANT ALLELES? A) Aa. B) AA. C) Aa. D) None of above. Show Answer Correct Answer: B) AA. 2. What is a gamete? A) A sperm or egg cell produced by meiosis. B) A diploid cell that split during meiosis. C) Two chromosomes that are identical. D) Two sets of sister chromatids. Show Answer Correct Answer: A) A sperm or egg cell produced by meiosis. 3. Ella and Olivia are sisters. Both sisters are taller than average, but each sister has specific traits the other sister does not. Ella is a competitive swimmer who trains outside in the summer. Her hair is bleached blond by the sun and by chlorine in the pool water. Her many hours of practice have made her fit and muscular.Olivia loves to help people and wants to become a nurse someday. She volunteers every week at the nursing home where her great-grandmother lives. She walks the residents to and from their daily activities, and in the evening during dinner, she play the piano beautifully for them.Which of the following traits is inherited? A) Height. B) Piano skills. C) Sun-bleached hair. D) Strong muscles. Show Answer Correct Answer: A) Height. 4. Albinism is a recessive disease. In a cross between two parents with normal coloration (Aa X Aa), what percent chance of the offspring being an albino? A) 0%. B) 25%. C) 50%. D) 100%. Show Answer Correct Answer: B) 25%. 5. What is Mendel's law of segregation? A) Principle that during the formation of gametes two alleles for the genes separate so that half the the gametes carry on allele. B) The principle that allele pairs for different genes separate independently in meiosis, so the inheritance of one trait generally does not influence the inheritance of another trait. C) The principle that a trait is determined by instructions on one gene only. D) None of above. Show Answer Correct Answer: A) Principle that during the formation of gametes two alleles for the genes separate so that half the the gametes carry on allele. 6. What is the chromosome theory of inheritance? A) Chromosomes are carried from parent to offspring on hybrids. B) Genes are carried from parents to offspring on chromosomes. C) Hybrid pairs of chromosomes combine to form offspring. D) Codominant genes combine to form new allele based heterozygous offspring. Show Answer Correct Answer: B) Genes are carried from parents to offspring on chromosomes. 7. What do you call the physical expression of a gene? A) Genotype. B) Dominant. C) Phenotype. D) Allele. Show Answer Correct Answer: C) Phenotype. 8. The study of how traits are passed from one generation to the next is called the science of ..... A) Genotypes. B) Incomplete dominance. C) Heredity. D) Phenotypes. Show Answer Correct Answer: C) Heredity. 9. A trait that is expressed over other traits. A) Recessive. B) Co-dominant. C) Incomplete Dominant. D) Dominant. Show Answer Correct Answer: D) Dominant. 10. Tetrad A) Process in which the number of chromosomes per cell is cut in half through the separation of homologous chromosomes in a diploid cell. B) Structure containing four chromatids that forms during meiosis. C) Process in which homologous chromosomes exchange portions of their chromatids during meiosis. D) None of above. Show Answer Correct Answer: B) Structure containing four chromatids that forms during meiosis. 11. The description of an observed phenomenon. It doesn't explain why the phenomenon exists or what causes it A) Law. B) Theory. C) Hypothesis. D) Evidence. Show Answer Correct Answer: A) Law. 12. The alleles for round (R) and yellow (Y) are ..... over the alleles for wrinkled (r) and green (y). A) Dominant. B) Recessive. C) Codominant. D) Polygenic. Show Answer Correct Answer: A) Dominant. 13. A kitten has spots and stripes. The mother has stripes and the father has spots. Which law of inheritance does this show? A) Incomplete dominance. B) Codominance. C) Multiple alleles. D) Polygenic inheritance. Show Answer Correct Answer: B) Codominance. 14. What is the cure for Tay Sachs? A) No cure yet. B) Nervous system therapy. C) Surgery to the cerebral cortex to rewire the nerves of the brain to stop Tay Sachs from occurring and causing further damage. D) Removal of the spine. Show Answer Correct Answer: A) No cure yet. 15. Snap dragon color is a incomplete dominant trait. A red flower (RR) is crossed with white flower (rr)? What color are flowers that are Rr? A) Red. B) Red and White. C) White. D) Pink. Show Answer Correct Answer: D) Pink. 16. A cross between purebred peas with inflated pods and purebred peas with pinched pods resulted in peas with all inflated pods. What is the recessive trait? A) Hybrids. B) Inflated pods. C) Pinched pods. D) Pod shape. Show Answer Correct Answer: C) Pinched pods. 17. The letters that help visualize a pea plant's genetic makeup are called .....? A) Genotype. B) Phenotype. C) Alleles. D) None of above. Show Answer Correct Answer: A) Genotype. 18. Pink snapdragons are an example of ..... A) Codominance. B) Complete dominance. C) Multiple alleles. D) Incomplete dominance. Show Answer Correct Answer: D) Incomplete dominance. 19. Which of the following is a heterozygous dominant genotype? A) GG. B) Gg. C) GGG. D) Gg. Show Answer Correct Answer: B) Gg. 20. For a second generation, Mendel allowed the F1 (first filial) to self-pollinate to produce F2 (second filial). The recessive traits reappeared in the F2 plants but only 1/4 times. What genetic Principle or Law was displayed in this case? A) Principle of Dominance. B) Law of Segregation. C) Principle of Independent Assortment. D) Law of Probability. Show Answer Correct Answer: B) Law of Segregation. ← 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