This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 9 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 9 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The arctic fox is blue-gray in the summer and white in the winter. What most likely influence(s) this change? A) Genes and the environment. B) Dominant alleles. C) The environment alone. D) Codominant alleles. Show Answer Correct Answer: A) Genes and the environment. 2. A trait that is expressed only when the dominant allele is NOT present is known as A) Recessive. B) Dominant. C) Timid. D) Shy. Show Answer Correct Answer: A) Recessive. 3. In Ooglies, orange hair color is codominant to green hair. If two orange and green haired Ooglies reproduce, what is the expected genotypic ratio? A) 4:0. B) 0:4. C) 1:2:1. D) 2:2. Show Answer Correct Answer: C) 1:2:1. 4. (External)The physical appearance of an organism A) Phenotype. B) Genotype. C) Glenotype. D) None of above. Show Answer Correct Answer: A) Phenotype. 5. How many alleles affect human blood type? A) 2. B) 3. C) 4. D) None of above. Show Answer Correct Answer: B) 3. 6. Physical or observable appearance A) Heterozygous. B) Genotype. C) Phenotype. D) Homozygous. Show Answer Correct Answer: C) Phenotype. 7. States that the alleles of two (or more) different genes get sorted into gametes independently of one another. In other words, the allele a gamete receives for one gene does not influence the allele received for another gene. A) Sex-linkage. B) Dominance. C) Segregation. D) Independent assortment. Show Answer Correct Answer: D) Independent assortment. 8. If one of your parents is blood type A and the other is type B, which of the following blood types would you likely be? A) O. B) AB. C) A or B. D) Any. Show Answer Correct Answer: D) Any. 9. Is equal to ..... A) 0%. B) 25%. C) 50%. D) 75%. Show Answer Correct Answer: B) 25%. 10. A father has type AB blood and the mother has type O. What percentage of their offspring would you expect to have? A) Type A, 25%, Type B 25%, Type AB 25%, Type O 25%. B) Type A 50%, Type B 25%, Type AB 25%, Type O 50%. C) Type A blood 50%, Type B 50%, Type AB 0%, Type O Blood 0%. D) Type A blood 100%. Show Answer Correct Answer: C) Type A blood 50%, Type B 50%, Type AB 0%, Type O Blood 0%. 11. According to the laws of segregation and independent assortment, how would the following alleles and genes distribute:GgTt A) Gg, GT, Tt, gt. B) Gg, Tt. C) GT, Gt, gT, gt. D) GT, gt. Show Answer Correct Answer: C) GT, Gt, gT, gt. 12. Snapdragon flowers come in red, pink and white. What type of inheritance is this? A) Complete Dominance. B) Incomplete Dominance. C) Codominance. D) Polygenic Inheritance. Show Answer Correct Answer: B) Incomplete Dominance. 13. In humans, wet earwax (E) is dominant to dry earwax (e) Dad:Homozygous recessive Mom:Heterozygous How many potential offspring have wet earwax? ..... /4 A) 1/4. B) 2/4. C) 3/4. D) 4/4. Show Answer Correct Answer: B) 2/4. 14. What does it mean when pea plants are described as being true-breeding? A) If allowed to self-pollinate, the plants will mutate into different offspring. B) If allowed to self-pollinate, the plants will produce offspring identical to themselves. C) They are only able to reproduce through self-pollination. D) They are unable to reproduce through self-pollination. Show Answer Correct Answer: B) If allowed to self-pollinate, the plants will produce offspring identical to themselves. 15. Study of hereditiy A) Genotype. B) Phenotype. C) Genes. D) Genetics. Show Answer Correct Answer: D) Genetics. 16. The passing of traits from one generation to the next is called ..... A) Genetics. B) Heredity. C) A monohybrid cross. D) DNA synthesis. Show Answer Correct Answer: B) Heredity. 17. What is true of the allele pair of someone with a genotype TT? A) It has two different forms of the allele for a gene. B) It is homozygous dominant. C) It is heterozygous. D) It is homozygous recessive. Show Answer Correct Answer: B) It is homozygous dominant. 18. The inheritance of short wings in Drosophila fruit flies is an x-linked, recessive trait. Which most likely result if a short-winged female mates with a long-winged male? A) All offspring will be short-winged. B) All females will be long-winged, and all males will be short-winged. C) All females will be short-winged, and all males will be long-winged. D) Half of the males and females will be short-winged, and half will be long-winged. Show Answer Correct Answer: B) All females will be long-winged, and all males will be short-winged. 19. A single male or female cell that carries only one allele of each trait A) Gamete. B) Gene. C) Probability. D) Hybrid. Show Answer Correct Answer: A) Gamete. 20. In some carnations, flower color exhibits codominance. When crosses, Red (R) and white (W) flowers make speckled flowers (RW) that show both colors.Complete a cross between 2 speckled flowers and find the genotype ratio. A) 0 RR:4 RW:0 WW. B) 2 RR:2 RW:0 WW. C) 1 RR:2 RW:1 WW. D) 0 RR:2 RW:2 WW. Show Answer Correct Answer: C) 1 RR:2 RW:1 WW. ← 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books