This quiz works best with JavaScript enabled. Home > Plant > Principles Of Genetics – Quiz 25 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 25 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. A kidney cell is an example of which kind of cell A) Somatic cell. B) Sex cell. C) Germ cell. D) Haploid cell. Show Answer Correct Answer: A) Somatic cell. 2. The pod color of pea plants is controlled by only one gene that has only two possible alleles. A) Polygenic inheritance. B) Incomplete dominance. C) Multiple alleles. D) Simple dominance. Show Answer Correct Answer: D) Simple dominance. 3. How can a tall pea plant crossed with another tall pea plant produce four offspring, within which 3 of the offspring are are tall, but one of the pea plants is short? A) One of the pea plants is homozygous recessive, while the other pea plant is homozygous recessive. This cross of pea plants would produce 3 offspring that are tall, but one of the pea plants is short. B) One of the pea plants is heterozygous dominant, while the other pea plant is homozygous dominant. This cross of pea plants would produce 3 offspring that are tall, but one of the pea plants is short. C) One of the pea plants is heterozygous dominant, while the other pea plant is heterozygous dominant. This cross of pea plants would produce 3 offspring that are tall, but one of the pea plants is short. D) None of the answers are correct. Show Answer Correct Answer: C) One of the pea plants is heterozygous dominant, while the other pea plant is heterozygous dominant. This cross of pea plants would produce 3 offspring that are tall, but one of the pea plants is short. 4. Which of the following best describes the genetic material a person receives from his or her father? A) 22 pairs of homologous chromosomes and an X and Y chromosome. B) 22 haploid cells and an X or Y chromosome. C) 23 diploid cells and an X and Y chromosome. D) 22 autosomes and an X or Y chromosome. Show Answer Correct Answer: D) 22 autosomes and an X or Y chromosome. 5. In some carnations, flower color exhibits codominance. Identify the correct genotypes for red, white, and speckled carnations. A) Red = RR, white = rr, speckled = Rr. B) Red = RR, white = WW, speckled = rw. C) Red = RR, white = ww, Speckled = Rw. D) Red = RR, white = WW, speckled = RW. Show Answer Correct Answer: D) Red = RR, white = WW, speckled = RW. 6. A mom with type A blood and a dad with type B blood have a child with type AB blood is an example of ..... A) Codominance. B) Incomplete dominance. C) Natural selection. D) Adaption. Show Answer Correct Answer: A) Codominance. 7. Gregor Mendel developed some basic principles of heredity by ..... A) Breeding fruit flies. B) Cutting off the tails of mice. C) Crossing pea plants. D) Growing bacteria in a laboratory. Show Answer Correct Answer: C) Crossing pea plants. 8. If a genotype is not known it is crossed with recessive parent to reveal what is hidden then the cross is known as: A) Backcross. B) Monohydrid cross. C) Test cross. D) Dihybrid cross. Show Answer Correct Answer: C) Test cross. 9. In rats, black coat color is dominant over white coat color. If some of the offspring of a cross between a black rat and a white rat are white, the black rat must have been A) A polyploid. B) Homozygous. C) Heterozygous. D) A mutation. Show Answer Correct Answer: C) Heterozygous. 10. How are meiosis and mitosis different? A) Meiosis produces haploid cells and mitosis produces diploid cells. B) Mitosis produces haploid cells and meiosis produces diploid cells. C) Tetrads are formed only during the process of mitosis. D) Chromatids are formed only during the process of meiosis. Show Answer Correct Answer: A) Meiosis produces haploid cells and mitosis produces diploid cells. 11. Outward appearance of an organism, regardless of its genes. A) Phenotype. B) Genotype. C) Haploid. D) Deploid. Show Answer Correct Answer: A) Phenotype. 12. Inbreeding A) Process of manipulating organisms, cells, or molecules to produce specific products. B) Continued breeding of individuals with similar characteristics to maintain the derived characteristics of a kind of organism. C) Method of breeding that allows only those organisms with desired characteristics to produce the next generation. D) None of above. Show Answer Correct Answer: B) Continued breeding of individuals with similar characteristics to maintain the derived characteristics of a kind of organism. 13. A mutations involving a change in a single DNA base pair A) Will definitely result in a genetic disease. B) Will have no effect on the organisms phenotype. C) Will produce a positive change. D) May have an effect on the organisms phenotype. Show Answer Correct Answer: D) May have an effect on the organisms phenotype. 14. How is a recessive allele symbolized? A) They aren't represented. B) Uppercase letter. C) A circle. D) Lowercase letter. Show Answer Correct Answer: D) Lowercase letter. 15. Proteins are formed in the cytoplasm of cell using genetic instructions from DNA, which is located in the cells nucleus. Which of the following best explains how the genetic information gets to the site of protein synthesis? A) DNA is divided during mitosis, and one strand travels outside the nucleus to bind with RNA and form a protein. B) DNA is copied to make mRNA. The mRNA leaves the nucleus and goes to the ribosomes, where the information is used to guide protein synthesis. C) Genetic information travels from DNA in the nucleus along a strand of mRNA that is connected to ribosomes in the cytoplasm where proteins are made. D) The genetic code is transferred to ribosomes on tRNA molecules, which can pass through the nuclear membrane. Show Answer Correct Answer: B) DNA is copied to make mRNA. The mRNA leaves the nucleus and goes to the ribosomes, where the information is used to guide protein synthesis. 16. In Mendel's famous test cross between two purebred pea plants, one tall and one short, all offspring were ..... A) Short. B) Recessive purebred. C) Tall. D) Medium. Show Answer Correct Answer: C) Tall. 17. The Law of Segregation states that alleles separate during the process of ..... A) Mitosis. B) Meiosis. C) Fertilization. D) Replication. Show Answer Correct Answer: B) Meiosis. 18. A mouse is heterozygous for alleles that produce brown fur and homozygous for alleles of an epistatic gene that causes albinism. What color fur will the mouse have? A) All white. B) Mostly brown. C) Brown and white. D) Entirely tan. Show Answer Correct Answer: A) All white. 19. What is the name for different forms of a gene? A) Chromosomes. B) DNA. C) Homozygous. D) Alleles. Show Answer Correct Answer: D) Alleles. 20. The number of chromosomes in a gamete is represented by the symbol A) Z. B) N. C) X. D) Y. Show Answer Correct Answer: B) N. ← 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