This quiz works best with JavaScript enabled. Home > Plant > Principles Of Genetics – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 24 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. How many PAIRS of chromosomes do humans have? A) 23. B) 46. C) 1. D) 2. Show Answer Correct Answer: A) 23. 2. Segregation A) Situation in which one allele is not completely dominant over another allele. B) Procedure used to separate and analyze DNA fragments by replacing a mixture of DNA fragments at one end of a porous gel and applying an electrical voltage to the gel. C) Separation of alleles during gamete formation. D) None of above. Show Answer Correct Answer: C) Separation of alleles during gamete formation. 3. W=white hairw= non-white hairIf you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair? A) None. B) 3/4. C) 1/2. D) All. Show Answer Correct Answer: D) All. 4. When Gregor Mendel bred the pea plants, he found that the yellow pea phenotype hid the green colored phenotype. Why? A) Yellow was the dominant phenotype. B) Green was the weaker phenotype. C) Yellow was the recessive phenotype. D) Green was controlled by a dominant trait so the phenotype was green. Show Answer Correct Answer: A) Yellow was the dominant phenotype. 5. If one parent contribues an IA alleale, and the other parent contributes an IB allele, their child will have what type of blood? A) A. B) AB. C) O. D) B. Show Answer Correct Answer: B) AB. 6. Define Chromosome A) Condensed DNA that is visible during cell division. B) Different versions of the same gene. C) All the chromosomes/DNA that code for an individual's traits. D) 1. A section of DNA that codes for specific proteins/traits. Show Answer Correct Answer: A) Condensed DNA that is visible during cell division. 7. The fraction of the human genome that actually codes for proteins is about A) 2%. B) 20%. C) 98%. D) 100%. Show Answer Correct Answer: A) 2%. 8. Body cells are called A) Gametes. B) Skins cells only. C) Somatic cells. D) Sperm cell. Show Answer Correct Answer: C) Somatic cells. 9. Their job is to determine traits A) Alleles. B) Genes. C) Phenotype. D) Genotype. Show Answer Correct Answer: A) Alleles. 10. What kind of allele is tt? A) Homozygous Dominant. B) Homozygous Recessive. C) Heterozygous. D) None of above. Show Answer Correct Answer: B) Homozygous Recessive. 11. Roan cattle show codominance for the color of their hair. There are alleles for red hair and white hair. What would you expect a heterozygous roan bull to look like if the trait showed incomplete dominance instead? A) It would be red. B) It would be white. C) It would be spotted. D) It would be pink. Show Answer Correct Answer: D) It would be pink. 12. Which of the following is heterozygous A) Ww. B) Ii. C) DD. D) Kk. Show Answer Correct Answer: A) Ww. 13. Function of dominant gene is A) Produce functional protein. B) Produce non functional protein. C) Produce less functional protein. D) Produce no protein. Show Answer Correct Answer: A) Produce functional protein. 14. What are the possible blood types of a man whose child has type A and whose wife has type B blood? A) A or B. B) B or AB. C) A or AB. D) B or O. Show Answer Correct Answer: C) A or AB. 15. Which of the following genotypes result in the same phenotype? A) AA and Ao. B) BB and AB. C) AA and BB. D) Bo and oo. Show Answer Correct Answer: A) AA and Ao. 16. A diagram showing the relative locations of genes on a chromosome is known as ..... A) Haploid. B) Diploid. C) Linked genes. D) Gene map. Show Answer Correct Answer: D) Gene map. 17. Mendel's studied Peas and how many traits A) 2. B) 3. C) 5. D) 7. Show Answer Correct Answer: D) 7. 18. In the P generation, a tall plant was crossed with a short plant. Short plants reappeared in the F2 generation because A) The alleles for both heights segregated when the F1 plants made gametes. B) The alleles for tallness begin to disappear in the F2 generation. C) The allele for shortness becomes dominant in the F2 generation. D) The allele for shortness becomes more common in the F2 generation. Show Answer Correct Answer: A) The alleles for both heights segregated when the F1 plants made gametes. 19. For any given trait there may be more than two choices for alleles, the trait may be inherited on more than one gene or chromosome, and there are many types of inheritance patterns it may follow, however, for each trait you may only inherit how many alleles? A) 1. B) 2. C) 23. D) 46. Show Answer Correct Answer: B) 2. 20. Explain why two genes found on the same chromosome are not always linked forever. A) Small portions of DNA may be exchanged through "crossing over". B) Linked genes can become unlinked during meiosis. C) Small portions of DNA are lose when polar bodies are formed. D) Some genes can be separated independently during meiosis. Show Answer Correct Answer: A) Small portions of DNA may be exchanged through "crossing over". ← 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