This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 19 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 19 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Punnett Square A) Micrograph of the complete diploid set of chromosomes grouped together in pairs, arranged in order of decreasing size. B) Chart that shows the presence or absence of a trait according to the relationships within a family across several generations. C) Tool used by biologists that analyzes an individual's unique collection of DNA restriction fragment; used to determine whether two samples of genetic material are from the same person. D) Diagram that can be used to predict the genotype and phenotype combinations of a genetic cross. Show Answer Correct Answer: D) Diagram that can be used to predict the genotype and phenotype combinations of a genetic cross. 2. Recessive alleles are- A) Capital. B) Lowercase. C) Both. D) Neither. Show Answer Correct Answer: B) Lowercase. 3. Condition in which one allele does not totally mask the other allele A) Incomplete Dominance. B) Phenotype. C) Multiple Alleles. D) None of above. Show Answer Correct Answer: A) Incomplete Dominance. 4. Which of the following is a possible result of a disruption in the cell cycle? A) Cancer. B) Photosynthesis. C) Cellular respiration. D) Protein synthesis. Show Answer Correct Answer: A) Cancer. 5. An example of a genotype is A) Tt. B) Tall. C) Wrinkled. D) 50%. Show Answer Correct Answer: A) Tt. 6. What do you mean by law of dominance? A) When offspring shows the characters of generation. B) When Offspring of cross breed parent only show dominant characters in F1 generation. C) When offspring of cross breed parent only show dominant characters in F2 generation. D) In F2 generation both the character which is governed by gene are separated. Show Answer Correct Answer: B) When Offspring of cross breed parent only show dominant characters in F1 generation. 7. If a pea plant were homozygous recessive for height, how would its alleles be represented? A) TT. B) Tt. C) Tt. D) TT. Show Answer Correct Answer: B) Tt. 8. A tall plant (TT) is crossed with a short plant (tt). If the tall F1 pea plants are allowed to self-pollinate, A) The offspring will be of medium height. B) All of the offspring will be tall. C) All of the offspring will be short. D) The offspring can be tall or short. Show Answer Correct Answer: D) The offspring can be tall or short. 9. What do the letters in each box of a Punnett square tell you? A) How to assemble a genetic map of the chromosome on which the alleles are located. B) The full pedigree of a species. C) That both parents show characteristics of the dominant trait. D) The possible combinations of alleles in offspring based on the parents' genetic makeup. Show Answer Correct Answer: D) The possible combinations of alleles in offspring based on the parents' genetic makeup. 10. Gregor Mendel is commonly referred to as which of the following? A) The Father of Life. B) The Father of Genetics. C) The Father of Biology. D) None of above. Show Answer Correct Answer: B) The Father of Genetics. 11. Different forms of a gene are called ..... A) Alleles. B) Traits. C) Genotype. D) Phenotype. Show Answer Correct Answer: A) Alleles. 12. Cystic fibrosis can be caused be A) Nondisjunction of an autosome. B) A change of three base pairs in DNA. C) Nondisjunction of a sex chromosomes. D) Deletion of an entire gene from a chromosomes. Show Answer Correct Answer: B) A change of three base pairs in DNA. 13. A strand of DNA with the sequence A-C-T-T-G serves as a template to form a strand of mRNA with the sequence U-G-A-A-C. During which process would this happen? A) Replication. B) Transcription. C) Translation. D) Meiosis. Show Answer Correct Answer: B) Transcription. 14. A unit of biological factor (DNA) that is inherited from one generation to the next A) Trait. B) Gene. C) Allele. D) Hybrid. Show Answer Correct Answer: B) Gene. 15. Reproductive process in which fertilization occurs within a single plant A) Self-Pollinating. B) Monohybrid. C) Homozygous Recessive. D) None of above. Show Answer Correct Answer: A) Self-Pollinating. 16. What did Mendel discovery in his second experiment? A) The recessive trait reappeared!. B) The dominant trait reappeared!. C) The ratio was a 1:4. D) All the offspring were true-breeding. Show Answer Correct Answer: A) The recessive trait reappeared!. 17. A normal human egg cell contains A) 22 autosomes and one X-chromosome. B) 22 autosomes and one Y-chromosome. C) 44 autosomes and XX-chromosomes. D) 44 autosomes and XY-chromosomes. Show Answer Correct Answer: A) 22 autosomes and one X-chromosome. 18. Who is the father of genetics? A) Thomas Morgan. B) Pena Nieto. C) Gregor Mendel. D) Donald Trump. Show Answer Correct Answer: C) Gregor Mendel. 19. What is a punnett square? A) A square used to predict the possible genotypes of offspring in a given cross. B) A square used to predict the possible birth rate of offspring. C) A square used to predict the possible behavioral characteristics an offspring could have. D) None of the above. Show Answer Correct Answer: A) A square used to predict the possible genotypes of offspring in a given cross. 20. Genotype A) Term used to refer to chromosomes in which one set comes from the male parent and one set comes from the female parent. B) Genetic makeup of an organism. C) Process in sexual reproduction in which male and female reproductive cells join to form a new cell. D) None of above. Show Answer Correct Answer: B) Genetic makeup of an organism. ← 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