This quiz works best with JavaScript enabled. Home > Plant > Genetics > Principles Of Genetics – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Principles Of Genetics Quiz 1 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Bacteria are organisms that reproduce asexually. How is this better for them than reproducing sexually? A) They produce more tetrads for reproduction. B) They have more genetic variation within their population. C) They can grow to larger populations more quickly. D) They use more cellular energy to reproduce. Show Answer Correct Answer: C) They can grow to larger populations more quickly. 2. The trait that is covered over by another form of the trait; it seems to disappear A) Dominant. B) Recessive. C) Weak. D) Strong. Show Answer Correct Answer: B) Recessive. 3. A version or variation of a gene A) Trait. B) Gene. C) Allele. D) DNA. Show Answer Correct Answer: C) Allele. 4. An organism that has two identical genes for a trait is said to be ..... A) Hybrid for the trait. B) Incompletely dominant for the trait. C) Heterozygous for the trait. D) Homozygous for the trait. Show Answer Correct Answer: D) Homozygous for the trait. 5. Each pea-plant gamete has how many alleles for the height gene? A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. 6. If two parents have type AB blood, what is the probability that their child will have type O blood? A) 0%. B) 25%. C) 50%. D) 100%. Show Answer Correct Answer: A) 0%. 7. Which of the following correctly identifies the allele combination of tt? A) Heterozygous. B) Homozygous dominant. C) Homozygous recessive. D) None of above. Show Answer Correct Answer: C) Homozygous recessive. 8. Function of recessive gene A) Produuce functional protein. B) Produce no protein. C) Produce less functional protein. D) B and c. Show Answer Correct Answer: D) B and c. 9. Which of the following is an example of a GENOTYPE? A) 25%. B) Blue. C) 1:2:1. D) Bb. Show Answer Correct Answer: D) Bb. 10. Which of these substances stores and transmits the information that specifies the traits of an organism? A) DNA. B) RNA. C) Enzymes. D) Carbohydrates. Show Answer Correct Answer: A) DNA. 11. Yellow seed color is dominant over green seed color in pea plants. Two plants that are heterozygous for the yellow seed trait are crossed and 200 seeds are produced. How many of the seeds would you expect to be green? A) 50. B) 100. C) 125. D) 200. Show Answer Correct Answer: A) 50. 12. When you flip a coin, what is the probability that it will come up tails? A) 0.5. B) 0.25. C) 0.125. D) 1. Show Answer Correct Answer: A) 0.5. 13. Human skin color occurs in a continuous range because it is affected by the dinteraction of several genes, making it A) Autosomal trait. B) Polygenic trait. C) Sex-linked trait. D) Codominant trait. Show Answer Correct Answer: B) Polygenic trait. 14. When not one trait is dominant over the other ..... you see both traits A) Co-dominance. B) Blending inheritance. C) Incomplete dominance. D) Polygenic inheritance. Show Answer Correct Answer: A) Co-dominance. 15. What is formed at the end of meiosis A) Two genetically identical cells. B) Four genetically different cells. C) Four genetically identical cells. D) Two genetically different cells. Show Answer Correct Answer: B) Four genetically different cells. 16. The trait that appears in hybrid offspring A) Dominant. B) Recessive. C) Polygenic. D) Codominance. Show Answer Correct Answer: A) Dominant. 17. Eye color in fruit flies is sex-linked. The color Red is dominant to the color white. If a female fruit fly that is heterozygous for eye color is crossed with a male fruit fly expressing the dominant trait, the offspring will have what color eyes? A) White. B) Red. C) Pink. D) Red and white. Show Answer Correct Answer: B) Red. 18. How is it possible that two different genotypes can make one phenotype? A) Heterozygous dominant and homozygous dominant. B) Homozygous recessive and homozygous dominant. C) Homozygous recessive and heterozygous recessive. D) Its not. Show Answer Correct Answer: A) Heterozygous dominant and homozygous dominant. 19. Homozygous phenotypes are Black and WhiteA heterozygous organism will have ..... flowers if the trait is incompletely dominant. A) Only Black. B) Gray. C) Only White. D) Both Black and White. Show Answer Correct Answer: B) Gray. 20. Gametes are eggs and sperm (sex cells). Human have 46 chromosomes, but how many are found in their liver cells? A) 11.5. B) 23. C) 46. D) 92. Show Answer Correct Answer: C) 46. Next →Related QuizzesPlant QuizzesPrinciples 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