This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 5 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 5 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A flower that is heterozygous for the color purple has A) Two identical alleles for the trait. B) Only one allele for the trait. C) Two different alleles for the trait. D) Two recessive alleles. Show Answer Correct Answer: C) Two different alleles for the trait. 2. A heterozygous purple flowered pea plant is crossed with a pure recessive white flowered pea plant. What is the expected phenotypic outcome of the offspring? A) 100% white flowered plants. B) 100% purple flowered plants. C) 50% purple flowered plants and 50% white flowered plants. D) 75% white flowered plants and 25% purple flowered plants. Show Answer Correct Answer: C) 50% purple flowered plants and 50% white flowered plants. 3. Two traits produce a blended phenotype. A) Polygenic inheritance. B) Incomplete dominance. C) Multiple alleles. D) Simple dominance. Show Answer Correct Answer: B) Incomplete dominance. 4. Which of the following assort independently? A) Chromosomes. B) Multiple alleles. C) Genes on the same chromosome. D) Codominant alleles. Show Answer Correct Answer: A) Chromosomes. 5. What's missing in this sequence?DNA $\rightarrow$ Genes $\rightarrow$ ..... $\rightarrow$ Genome A) Homozygous. B) Chromosome. C) Allele. D) RNA. Show Answer Correct Answer: B) Chromosome. 6. Gamete A) Wife/husband. B) Gender. C) Body cell. D) Dame. Show Answer Correct Answer: A) Wife/husband. 7. The offspring of the P1 generation are called the ..... generation. A) F1. B) Lost. C) F2. D) P2. Show Answer Correct Answer: A) F1. 8. The tiny fruit fly is a superstar of genetics research. Thousands of experiments have explored how flies inherit traits. Wing shape, body color, eye color, and head shape are a few traits under investigation. Fruit flies make good study subjects because they are inexpensive, take little space, and breed quickly. In addition, humans and fruit flies share 75% of their disease genes. By studying fruit-fly genetics, we can learn about human illness. Which of these terms describes the expression of an organism's genes? A) Genotype. B) Inherited factor. C) Phenotype. D) Masked trait. Show Answer Correct Answer: C) Phenotype. 9. What is incomplete dominance? A) Describes the genotype of a trait from parents to offspring from genetic information. B) The greater resemblance of offspring of to parents than to other individuals in the population. C) The case in which the the heterozygote has a phenotype intermediate between those of the two homozygotes. D) None of above. Show Answer Correct Answer: C) The case in which the the heterozygote has a phenotype intermediate between those of the two homozygotes. 10. All of these can be inherited by people EXCEPT - A) Language. B) Blood type. C) Eye color. D) Height. Show Answer Correct Answer: A) Language. 11. Meiosis involves ..... divisions and results in ..... genetically different daughter cells. A) 1, 2. B) 2, 2. C) 1, 4. D) 2, 4. Show Answer Correct Answer: D) 2, 4. 12. Long chains of molecules that make up chromosomes are known as ..... A) Traits. B) DNA. C) Genes. D) None of above. Show Answer Correct Answer: B) DNA. 13. A Punnett square shows all of the following EXCEPT A) All possible results of a genetic cross. B) The genotypes of the offspring. C) The alleles in the gametes of each parent. D) The actual results of a genetic cross. Show Answer Correct Answer: D) The actual results of a genetic cross. 14. A man and a woman who are both heterozygous for normal skin pigmentation (Aa) produce an albino offspring (aa). Which of Mendel's principles explain(s) why the offspring is albino? A) Dominance and segregation. B) Dominance only. C) Independent assortment only. D) Segregation only. Show Answer Correct Answer: A) Dominance and segregation. 15. A dihybrid trait crosses ..... A) 3 traits. B) One trait. C) 2 traits. D) None of above. Show Answer Correct Answer: C) 2 traits. 16. A dihybrid cross (AaBb x AaBb) will result in what offspring ratio? A) 4:4:2:2. B) 1:3:1. C) 3:1. D) 9:3:3:1. Show Answer Correct Answer: D) 9:3:3:1. 17. A cell that has two complete sets of chromosomes (one from each parent) is called ..... and abbreviated as ..... A) Diploid, N. B) Haploid, N. C) Diploid, 2N. D) Haploid, 4N. Show Answer Correct Answer: C) Diploid, 2N. 18. What traits could scientists potentially manipulate by genetically engineering human babies. A) Hair color. B) Gender. C) Disease resistance. D) All of the above. Show Answer Correct Answer: D) All of the above. 19. In mice coat color is incompletely dominant. Black and white are homozygous. Brown mice are heterozygous.What is the genotype for a brown mouse? A) BB. B) Bb. C) Bb. D) None of above. Show Answer Correct Answer: B) Bb. 20. A ..... is the specific genetic makeup or "code" for a particular trait. A) Genotype. B) Phenotype. C) Traits. D) None of above. Show Answer Correct Answer: A) Genotype. ← PreviousNext →Related QuizzesPlant QuizzesPrinciples Of Genetics Quiz 1Principles Of Genetics Quiz 2Principles Of Genetics Quiz 3Principles Of Genetics Quiz 4Principles 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