This quiz works best with JavaScript enabled. Home > Agriculture > Plant > Genetics > Principles Of Genetics – Quiz 10 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 10 (30 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which will most likely cause a gene to mutate? A) Water. B) Radiation. C) Soil. D) None of above. Show Answer Correct Answer: B) Radiation. 2. What kind of allele is Bb? A) Heterozygous. B) Homozygous Dominant. C) Homozygous Recessive. D) None of above. Show Answer Correct Answer: A) Heterozygous. 3. Organisms that have different alleles for a particular trait are said to be A) Hybrid. B) Heterzygous. C) Dominant. D) Homozygous. Show Answer Correct Answer: B) Heterzygous. 4. His work brought about the chromosome theory of heredity A) James Watson. B) Walter Sutton. C) Gregor Mendel. D) None of above. Show Answer Correct Answer: B) Walter Sutton. 5. In snapdragons, Tallness (T) is dominant to dwarfness (t). In a cross between two plants that are heterozygous for this trait, the percent of offspring expected to exhibit dwarfness is A) 100%. B) 50%. C) 25%. D) 0%. Show Answer Correct Answer: C) 25%. 6. The failure of chromosomes to separate during meiosis is called A) Down syndrome. B) X-chromosome inactivation. C) Turner's syndrome. D) Nondisjunction. Show Answer Correct Answer: D) Nondisjunction. 7. In a heterozygous genotype, the ..... allele takes over in the phenotype. A) Recessive. B) Dominant. C) Lower case letter. D) Both. Show Answer Correct Answer: B) Dominant. 8. When more than two alleles for a gene occur (such as blood type in humans) A) Incomplete Dominance. B) Codominance. C) Multiple Alleles. D) Polygenic Traits. Show Answer Correct Answer: C) Multiple Alleles. 9. What is the process by which organisms with certain adaptations survive to pass on their traits to a greater number of offspring? A) Artificial selection. B) Population genetics. C) Genetic drift. D) Natural selection. Show Answer Correct Answer: D) Natural selection. 10. What is the approximate probability that a human offspring will be female? A) 25%. B) 10%. C) 50%. D) 75%. Show Answer Correct Answer: C) 50%. 11. What is the probability of producing a tall pea plant from a genetic cross between two hybrid tall pea plants? A) 2/4. B) 4/4. C) 3/4. D) 1/4. Show Answer Correct Answer: C) 3/4. 12. In the human Karyotype, what term is used to describe the pair of chromosomes in each numbered group? A) Homologous chromosomes. B) Homozygous chromosomes. C) Autosomes. D) Autosomes. Show Answer Correct Answer: A) Homologous chromosomes. 13. An organism whose genotype is Tt A) Hybrid. B) Polygenic. C) Purebred. D) Codominance. Show Answer Correct Answer: A) Hybrid. 14. A person has brown hair, brown eyes, and is extremely tall. These characteristics are commonly referred to as what? A) Heredity. B) Genetics. C) Alleles. D) Traits. Show Answer Correct Answer: D) Traits. 15. Two or more genes that interact to produce a single trait A) Hybrid. B) Purebred. C) Dominant. D) Polygenic inheritance. Show Answer Correct Answer: D) Polygenic inheritance. 16. Name the Austrian monk who is considered the Father of Heredity. A) Johann Nester. B) Reginald Punnett. C) Charles Darwin. D) Gregor Mendel. Show Answer Correct Answer: D) Gregor Mendel. 17. Pp is an example of this type of genotype ..... A) Heredity. B) Heterozygous. C) Homozygous. D) Pedigree. Show Answer Correct Answer: B) Heterozygous. 18. Which term correctly describes an individual with a pair of the same alleles for a trait? A) Heterozygous. B) Heterologus. C) Homologous. D) Homozygous. Show Answer Correct Answer: D) Homozygous. 19. If nondisjunction occurs during meiosis A) It occurs during prophase. B) Only two gametes may form instead of four. C) Some gametes may have an extra copy of some genes. D) Only two gametes may form instead of four c. the chromatids do not separate. Show Answer Correct Answer: C) Some gametes may have an extra copy of some genes. 20. An example of a heterozygous genotype is A) TTRR. B) Aa. C) DD. D) Tt. Show Answer Correct Answer: D) Tt. 21. Which notation could be used to represent the recessive allele for green pea seeds? A) G. B) G. C) Y. D) Y. Show Answer Correct Answer: C) Y. 22. In an individual, particular combination of genes is called A) Phenotype. B) Prototype. C) Genotype. D) Serotype. Show Answer Correct Answer: C) Genotype. 23. What happens to sister chromatids in meiosis II? A) They triple in size. B) They are divided. C) They duplicate. D) They remain together. Show Answer Correct Answer: B) They are divided. 24. Which plant Gregor Mendel had cross breed for his experiment? A) Onion plant. B) Carrot plant. C) Pea plant. D) Lily plant. Show Answer Correct Answer: C) Pea plant. 25. An organism's outward appearance A) Genotype. B) Phenotype. C) Alles. D) Hybrid. Show Answer Correct Answer: B) Phenotype. 26. The farther apart two genes are located on a chromosome, the A) Less likely they are to be inherited together. B) Less likely they are to assort independently. C) Less likely they are to be separated by a crossover during meiosis. D) More likely they are to be linked. Show Answer Correct Answer: A) Less likely they are to be inherited together. 27. Who was the Austrian Monk who studied Heredity in the 1800's A) Gregor Mendel. B) Benjamin Franklin. C) Reginald Punnent. D) Charles Darwin. Show Answer Correct Answer: A) Gregor Mendel. 28. If an individual possesses two recessive alleles for the same trait, the individual is said to be A) Haploid for the trait. B) Heterozygous for the trait. C) Homozygous for the trait. D) Mutated. Show Answer Correct Answer: C) Homozygous for the trait. 29. Neither allele is completely dominant over the other in ..... This special inheritance causes heterozygous individuals to have a blended phenotype (red and white alleles causing pink flowers for example). A) Codominance. B) Multiple allele traits. C) Incomplete dominance. D) None of above. Show Answer Correct Answer: C) Incomplete dominance. 30. Two sets of chromosomes, one set from mom and one from dad. A) Heterozygous. B) Allele. C) Homologous. D) Genetics. Show Answer Correct Answer: C) Homologous. ← PreviousNext →Related QuizzesPlant QuizzesAgriculture 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 8 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books