This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 29 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 29 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which term refers to an organism's physical appearance A) Recessive allele. B) Dominant. C) Genotype. D) Phenotype. Show Answer Correct Answer: D) Phenotype. 2. Barry is the oldest of five children in his family. He wants to demonstrate the Law of Superposition to his siblings and parents. Which of the following ways might Barry use to show his family what the Law of Superposition is? A) Draw a human pyramid with Barry on the bottom and the youngest on top. B) Draw a human pyramid with the children at the bottom and the parents at the top. C) Draw a human pyramid with one parent at the bottom and one at the top with the children in the middle. D) Draw a human pyramid with the youngest on the bottom and Barry on top. Show Answer Correct Answer: A) Draw a human pyramid with Barry on the bottom and the youngest on top. 3. During what process does independent assortment and segregation of alleles occur? A) Mitosis. B) Meiosis. C) Fertilization. D) None of above. Show Answer Correct Answer: B) Meiosis. 4. Who is considered the "Father of Genetics"? A) Hans Krebs. B) Frederick Heredity. C) Gregor Mendel. D) Charles Darwin. Show Answer Correct Answer: C) Gregor Mendel. 5. In a breeding experiment what are the first 2 individuals called? A) P generation. B) F1 generation. C) F2 generation. D) None of above. Show Answer Correct Answer: A) P generation. 6. Which statement is true of Y chromosomes? A) Only men have them. B) Only women have them. C) Women have two of them. D) All babies have them. Show Answer Correct Answer: A) Only men have them. 7. A male and female bison that are both heterozygous for normal skin pigmentation (Aa) produce an albino offspring (aa). Which of Mendels principles exlain(s) why the offspring is albine? A) Dominance only. B) Dominance and segregation. C) Independent assortment only. D) Segregation only. Show Answer Correct Answer: C) Independent assortment only. 8. Which of the following is not an environmental factor that affects gene expression? A) Temperature. B) Ph/ acidity of soil. C) Sound waves. D) Time of year. Show Answer Correct Answer: C) Sound waves. 9. Which is an example of incomplete dominance? A) Two white cats having black kittens. B) A white cat and a black cat having grey kittens. C) A white cat and a black cat having white kittens. D) A grey cat and a black cat having black kittens. Show Answer Correct Answer: B) A white cat and a black cat having grey kittens. 10. The letters that represent the different types of alleles A) Phenotype. B) Genotype. C) Plygenic. D) Alleles. Show Answer Correct Answer: B) Genotype. 11. What is NOT a possible genotype for someone with type B blood? A) BB. B) AB. C) BO. D) None of above. Show Answer Correct Answer: B) AB. 12. Gregor Mendel used pea plants to study heredity for all of the following reasons EXCEPT A) That it was relatively easy to cross different pea plants in order to observe the resulting offspring. B) That their characters, like pod color and height, were east to observe. C) That the characters Mendel studied had at least two identifiable traits. D) That many characters such as pod color and seed shape were controlled by a dozen or more interacting genes. Show Answer Correct Answer: D) That many characters such as pod color and seed shape were controlled by a dozen or more interacting genes. 13. Which human trait is controlled by polygenic inheritance? A) Earlobe position. B) Blood type. C) Thumb shape. D) Eye color. Show Answer Correct Answer: D) Eye color. 14. Blue (B) is dominant over tan (b). If Bb were crossed with BB, what percent of the progeny will be tan? A) 0%. B) 50%. C) 75%. D) 100%. Show Answer Correct Answer: A) 0%. 15. When two or more characteristics are inherited, and the genes are located on separate chromosomes, then they are inherited independently of each other A) Unit inheritance. B) Segregation. C) Independent assortment. D) Dominance. Show Answer Correct Answer: C) Independent assortment. 16. Which is true of an offspring with incomplete dominance? A) Every offspring shows the dominant phenotype. B) Offspring phenotype is a combination of the parents' phenotypes. C) Multiple genes determine its phenotype. D) Both alleles can be observed in its phenotype. Show Answer Correct Answer: B) Offspring phenotype is a combination of the parents' phenotypes. 17. Most sex-linked genes are located on A) The autosomes. B) The X chromosome only. C) The Y chromosome only. D) Both the X chromosome and the Y chromosome. Show Answer Correct Answer: B) The X chromosome only. 18. The allele that is hidden by another form A) Recessive. B) Dominant. C) Genotype. D) Phenotype. Show Answer Correct Answer: A) Recessive. 19. What is the definition of Heterozygous? A) When an individual has two sets of the same allele. B) When it is neither dominant or recessive. C) A pair of genes where one is dominant and one is recessive. D) None of above. Show Answer Correct Answer: C) A pair of genes where one is dominant and one is recessive. 20. What organism did Thomas Hunt Morgan use for his genetic studies? A) Four o'clock flowers. B) Speckled chickens. C) Himalayan rabbits. D) Fruit fly (aka Drosphila). Show Answer Correct Answer: D) Fruit fly (aka Drosphila). ← 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