This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 47 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 47 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of these characters is dominant A) Axial position of flowers. B) Apical position of flowers. C) Green colour of cotyledons. D) Wrinkled shape of seeds. Show Answer Correct Answer: A) Axial position of flowers. 2. Who used pea plants to study the inheritance of traits? A) Hippocrates. B) Gregor Mendel. C) Socrates. D) None of the above. Show Answer Correct Answer: B) Gregor Mendel. 3. Phenotype refers to the ..... of an individual A) Genetic makeup. B) Physical appearance. C) Recessive alleles. D) Dominant alleles. Show Answer Correct Answer: B) Physical appearance. 4. A tetrad consists of A) A homologous pair of chromosomes, each made of 2 chromatids. B) The 4 copies of a chromosome that are normally present in cells. C) 2 sister chromatids that have each been replicated during interphase. D) A parental chromosome that was replicated to form a pair, then replicated agai. Show Answer Correct Answer: A) A homologous pair of chromosomes, each made of 2 chromatids. 5. The measure of the likelihood of an event occurring. A) Pure line. B) Self-pollinate. C) Probability. D) F1 generation. Show Answer Correct Answer: C) Probability. 6. In Mendel's pea plants, the homozygous recessive phenotype was white flowers. If Mendel crossed two homozygous recessive pea plants, what color flowers would be seen in the offspring? A) White and purple. B) White. C) Purple. D) Lavendar. Show Answer Correct Answer: B) White. 7. Hybrid A) Offspring of crosses between parents with different traits. B) Micrograph of the complete diploid set of chromosomes grouped together in pairs, arranged in order of decreasing size. C) Having two identical alleles for a particular gene. D) Chromosome that is not a sex chromosome; also called autosomal chromosome. Show Answer Correct Answer: A) Offspring of crosses between parents with different traits. 8. Variation in human skin color is an example of A) Incomplete dominance. B) Codominance. C) Polygenic traits. D) Multiple alleles. Show Answer Correct Answer: C) Polygenic traits. 9. The scientific study of heredity is called ..... A) Genetics. B) Mitosis. C) Meiosis. D) Mendelism. Show Answer Correct Answer: A) Genetics. 10. Normal human eggs have: A) 22 autosomes and an X chromosome. B) 22 autosomes and a Y chromosome. C) 23 autosomes. D) 46 chromosomes. Show Answer Correct Answer: A) 22 autosomes and an X chromosome. 11. Sex cells produced by meiosis have ..... the number of chromosomes as the parent cells. A) Twice. B) Half. C) Thrice. D) 100%. Show Answer Correct Answer: B) Half. 12. During which stage of meiosis does crossing over occur? A) Prophase I. B) Anaphase I. C) Telophase II. D) Metaphase II. Show Answer Correct Answer: A) Prophase I. 13. Specific colors or features (ex:BLUE eyes) A) Charactertistic. B) Trait. C) Genes. D) Alleles. Show Answer Correct Answer: B) Trait. 14. Why did Mendel carry out an experiment following two genes as they passed from one generation to the next? A) He wanted to determine if the segregation of one pair of alleles affects another pair of alleles. B) He wanted to know what determines biological inheritance. C) He wanted to show that some alleles are dominant and some alleles are recessive. D) He wanted to determine if recessive traits would disappear when genes were crossed. Show Answer Correct Answer: A) He wanted to determine if the segregation of one pair of alleles affects another pair of alleles. 15. The trait that covers up or dominates another form of the trait A) Recessive. B) Dominant. C) Strong. D) Weak. Show Answer Correct Answer: B) Dominant. 16. Holly's parents both have brown hair and brown eyes. Her mother has pale skin and always wears her hair in a ponytail, but her father has dark skin and keeps his hair cut very short. Which trait can Holly not inherit from her parents? A) Hair color. B) Hairstyle. C) Eye color. D) Skin color. Show Answer Correct Answer: B) Hairstyle. 17. In this Punnett square, the two parents are heterozygous for green hair (G) What is the percent probability that they will produce offspring who also have green hair? A) 25%. B) 50%. C) 75%. D) 100%. Show Answer Correct Answer: C) 75%. 18. Gregor Mendel's "P" Generation consisted of plants which were ..... with opposite traits. A) Purebred. B) Hybrid. C) Heterozygous. D) Incompletely Dominant. Show Answer Correct Answer: A) Purebred. 19. A recessive trait is observed when an organism has ..... recessive genetic factor(s). A) 0. B) 1. C) 2. D) 3. Show Answer Correct Answer: C) 2. 20. Autosomes A) Chromosome that is not a sex chromosome; also called autosomal chromosome. B) One of two chromosomes that determines an individual's sex. C) Entire set of genetic information that an organism carries in its DNA. D) None of above. Show Answer Correct Answer: A) Chromosome that is not a sex chromosome; also called autosomal chromosome. ← 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